Test Catalog

Test Id : THEV1

Thalassemia and Hemoglobinopathy Evaluation, Blood and Serum

Useful For
Suggests clinical disorders or settings where the test may be helpful

Evaluation of microcytosis

 

Extensive and economical diagnosis and classification of hemoglobinopathies or thalassemia, including complex disorders

 

Diagnosis of hereditary persistence of hemoglobin

Profile Information
A profile is a group of laboratory tests that are ordered and performed together under a single Mayo Test ID. Profile information lists the test performed, inclusive of the test fee, when a profile is ordered and includes reporting names and individual availability.

Test Id Reporting Name Available Separately Always Performed
THEVI Hemoglobinopathy Interpretation No Yes
HGBCE Hb Variant, A2 and F Quantitation,B Yes Yes
HPLC HPLC Hb Variant, B No Yes
FERR1 Ferritin, S Yes Yes

Reflex Tests
Lists tests that may or may not be performed, at an additional charge, depending on the result and interpretation of the initial tests.

Test Id Reporting Name Available Separately Always Performed
HPFH Hb F Distribution, B No No
SDEX Sickle Solubility, B Yes No
IEF Isoelectric Focusing, B No No
UNHB Hb Stability, B No No
MASS Hb Variant by Mass Spec, B No No
ATHAL Alpha-Globin Gene Analysis Yes No
WASQR Alpha Globin Gene Sequencing, B Yes, (Order WASEQ) No
WBSQR Beta Globin Gene Sequencing, B Yes, (Order WBSEQ) No
WBDDR Beta Globin Cluster Locus Del/Dup,B Yes, (Order WBDD) No
WGSQR Gamma Globin Full Gene Sequencing Yes, (Order WGSEQ) No
THEV0 Thalassemia Summary Interpretation No No

Testing Algorithm
Delineates situations when tests are added to the initial order. This includes reflex and additional tests.

This is a consultative evaluation in which the case will be evaluated at Mayo Clinic Laboratories, the appropriate tests performed at an additional charge, and the results interpreted.

 

This evaluation will always include hemoglobins A2 and F and hemoglobin electrophoresis utilizing cation exchange high-performance liquid chromatography (HPLC) and capillary electrophoresis methods.

 

If a serum sample is received, a serum ferritin will always be performed to allow incorporation of possible iron deficiency into profile interpretation and economical test utilization. If the ferritin component is not needed, do not send a serum sample, and the ferritin test will not be performed. Note: If a ferritin is not performed or provided, and if microcytosis is present and no other abnormalities are found (beta thalassemia, a hemoglobin variant that is associated with microcytosis), the case will be reflexed to alpha-globin gene analysis unless otherwise requested not to be performed.

 

Hemoglobin electrophoresis reflex testing, performed at additional charge, may include any or all of the following as indicated to identify rare hemoglobin variants present: sickle solubility (hemoglobin S screen), hemoglobin heat and isopropanol stability studies, isoelectric focusing, HbF distribution by flow cytometry, cation exchange HPLC, DNA (Sanger) testing for beta-chain variants and the most common beta thalassemias (beta-globin gene sequencing), multiplex ligation-dependent probe amplification testing for beta-cluster locus large deletions and duplications, including large deletional hereditary persistence of fetal hemoglobin (HPFH), delta-beta, delta thalassemias, gamma-delta-beta, and epsilon-gamma-delta-beta thalassemias (beta-globin cluster locus deletion/duplication), large deletional alpha thalassemias and alpha-gene duplications (alpha-globin gene analysis), alpha-chain variants and nondeletional alpha thalassemias (alpha-globin gene sequencing), and gamma-chain variants and nondeletional HPFH (gamma-globin full gene sequencing).

 

An additional consultative interpretation that summarizes all testing will be provided after test completion to incorporate subsequent results into overall evaluation if any of the following molecular tests are reflexed on this test.

-ATHAL / Alpha-Globin Gene Analysis, Varies

-WASQR / Alpha-Globin Gene Sequencing, Blood

-WBSQR / Beta-Globin Gene Sequencing, Blood

-WBDDR / Beta-Globin Cluster Locus Deletion/Duplication, Blood

-WGSQR / Gamma-Globin Full Gene Sequencing, Varies

The results of the individual protein and molecular tests will be released as they are completed; with a final summary interpretation report correlating all performed testing with any clinical information or complete blood cell count results received.

 

For more information see Benign Hematology Evaluation Comparison

Method Name
A short description of the method used to perform the test

THEVI, THEV0: Medical Interpretation

HGBCE: Capillary Electrophoresis

HPLC: Cation Exchange/High-Performance Liquid Chromatography (HPLC)

FERR1: Electrochemiluminescence Immunoassay

IEF: Isoelectric Focusing

MASS: Mass Spectrometry (MS)

HPFH: Flow Cytometry

UNHB: Isopropanol and Heat Stability

NY State Available
Indicates the status of NY State approval and if the test is orderable for NY State clients.

Yes

Reporting Name
Lists a shorter or abbreviated version of the Published Name for a test

Thalassemia and Hemoglobinopathy Ev

Aliases
Lists additional common names for a test, as an aid in searching

A2 Hemoglobin

Alpha Globin Variant

Alpha Thalassemia

Alpha-Thalassemia Evaluation

Barts Hemoglobin

Barts hydrops fetalis

Beta Globin Variant

Beta Thalassemia

E beta thalassemia

H Disease

Hb Barts

Hb H disease

HBA1

HBA2

HBB

HBG1

HBG2

Hemoglobin A2

Hemoglobin Cascade

Hemoglobin Electrophoresis

Hemoglobin Electrophoresis Cascade Level 1

Hemoglobin H disease

Hemoglobin Molecular studies

Hemoglobin Variant

Hemoglobinopathy

HGB (Hemoglobin) Electrophoresis

HPFH

Hydrops fetalis

Isoelectric Focusing

Mass Spectrometry

Microcytosis

MLPA

S beta thalassemia

Sickle cell

Sickling Test

Thalassemia

Evaluation

Sickle Cell Anemia

Hemoglobin A

Hemoglobin F

Hemoglobin C

Hb S

Testing Algorithm
Delineates situations when tests are added to the initial order. This includes reflex and additional tests.

This is a consultative evaluation in which the case will be evaluated at Mayo Clinic Laboratories, the appropriate tests performed at an additional charge, and the results interpreted.

 

This evaluation will always include hemoglobins A2 and F and hemoglobin electrophoresis utilizing cation exchange high-performance liquid chromatography (HPLC) and capillary electrophoresis methods.

 

If a serum sample is received, a serum ferritin will always be performed to allow incorporation of possible iron deficiency into profile interpretation and economical test utilization. If the ferritin component is not needed, do not send a serum sample, and the ferritin test will not be performed. Note: If a ferritin is not performed or provided, and if microcytosis is present and no other abnormalities are found (beta thalassemia, a hemoglobin variant that is associated with microcytosis), the case will be reflexed to alpha-globin gene analysis unless otherwise requested not to be performed.

 

Hemoglobin electrophoresis reflex testing, performed at additional charge, may include any or all of the following as indicated to identify rare hemoglobin variants present: sickle solubility (hemoglobin S screen), hemoglobin heat and isopropanol stability studies, isoelectric focusing, HbF distribution by flow cytometry, cation exchange HPLC, DNA (Sanger) testing for beta-chain variants and the most common beta thalassemias (beta-globin gene sequencing), multiplex ligation-dependent probe amplification testing for beta-cluster locus large deletions and duplications, including large deletional hereditary persistence of fetal hemoglobin (HPFH), delta-beta, delta thalassemias, gamma-delta-beta, and epsilon-gamma-delta-beta thalassemias (beta-globin cluster locus deletion/duplication), large deletional alpha thalassemias and alpha-gene duplications (alpha-globin gene analysis), alpha-chain variants and nondeletional alpha thalassemias (alpha-globin gene sequencing), and gamma-chain variants and nondeletional HPFH (gamma-globin full gene sequencing).

 

An additional consultative interpretation that summarizes all testing will be provided after test completion to incorporate subsequent results into overall evaluation if any of the following molecular tests are reflexed on this test.

-ATHAL / Alpha-Globin Gene Analysis, Varies

-WASQR / Alpha-Globin Gene Sequencing, Blood

-WBSQR / Beta-Globin Gene Sequencing, Blood

-WBDDR / Beta-Globin Cluster Locus Deletion/Duplication, Blood

-WGSQR / Gamma-Globin Full Gene Sequencing, Varies

The results of the individual protein and molecular tests will be released as they are completed; with a final summary interpretation report correlating all performed testing with any clinical information or complete blood cell count results received.

 

For more information see Benign Hematology Evaluation Comparison

Specimen Type
Describes the specimen type validated for testing

Serum

Whole Blood EDTA

Necessary Information

Include the following information with the specimen:

Recent transfusion information

-Most recent complete blood cell count results

-If not sending serum, include ferritin results.

 

Metabolic Hematology Patient Information (T810) is strongly recommended. Testing may proceed without this information, however if the information requested is received, any pertinent reported clinical features and data will drive the focus of the evaluation and be considered in the interpretation.

 

The laboratory has extensive experience in hemoglobin variant identification and many cases can be confidently classified without molecular testing. However, molecular confirmation is always available, subject to sufficient sample quantity (eg, MLPA testing requires at least 2 mL of sample in addition to protein testing requirements). If no molecular testing or specific molecular tests are desired, utilize the appropriate check boxes on the form. If the form or other communication is not received, the reviewing hematopathologist will select appropriate tests to sufficiently explain the protein findings which may or may not include molecular testing.

Specimen Required
Defines the optimal specimen required to perform the test and the preferred volume to complete testing

Blood and serum are required.

 

Specimen Type: Whole blood

Container/Tube: Lavender top (EDTA)

Specimen Volume: 15 mL

Collection Instructions: Send whole blood specimen in original tube. Do not aliquot.

 

Specimen Type: Serum

Patient Preparation: For 12 hours before specimen collection do not take multivitamins or dietary supplements containing biotin (vitamin B7), which is commonly found in hair, skin, and nail supplements and multivitamins.

Collection Container/Tube:

Preferred: Serum gel

Acceptable: Red top

Submission Container/Tube: Plastic vial

Specimen Volume: 0.6 mL

Collection Instructions:

1. Serum gel tubes should be centrifuged within 2 hours of collection.

2. Red-top tubes should be centrifuged, and the serum aliquoted into a plastic vial within 2 hours of collection.

3. Label specimen as serum.

Special Instructions
Library of PDFs including pertinent information and forms related to the test

Forms

1. New York Clients-Informed consent is required. Document on the request form or electronic order that a copy is on file. The following documents are available:

-Informed Consent for Genetic Testing (T576)

-Informed Consent for Genetic Testing-Spanish (T826)

2. Metabolic Hematology Patient Information (T810)

3. If not ordering electronically, complete, print, and send a Benign Hematology Test Request (T755) with the specimen

Specimen Minimum Volume
Defines the amount of sample necessary to provide a clinically relevant result as determined by the Testing Laboratory

Blood: 2.5 mL

Serum: 0.5 mL

Reject Due To
Identifies specimen types and conditions that may cause the specimen to be rejected

Gross hemolysis Reject

Specimen Stability Information
Provides a description of the temperatures required to transport a specimen to the performing laboratory, alternate acceptable temperatures are also included

Specimen Type Temperature Time Special Container
Serum Refrigerated 7 days
Whole Blood EDTA Refrigerated 7 days

Useful For
Suggests clinical disorders or settings where the test may be helpful

Evaluation of microcytosis

 

Extensive and economical diagnosis and classification of hemoglobinopathies or thalassemia, including complex disorders

 

Diagnosis of hereditary persistence of hemoglobin

Testing Algorithm
Delineates situations when tests are added to the initial order. This includes reflex and additional tests.

This is a consultative evaluation in which the case will be evaluated at Mayo Clinic Laboratories, the appropriate tests performed at an additional charge, and the results interpreted.

 

This evaluation will always include hemoglobins A2 and F and hemoglobin electrophoresis utilizing cation exchange high-performance liquid chromatography (HPLC) and capillary electrophoresis methods.

 

If a serum sample is received, a serum ferritin will always be performed to allow incorporation of possible iron deficiency into profile interpretation and economical test utilization. If the ferritin component is not needed, do not send a serum sample, and the ferritin test will not be performed. Note: If a ferritin is not performed or provided, and if microcytosis is present and no other abnormalities are found (beta thalassemia, a hemoglobin variant that is associated with microcytosis), the case will be reflexed to alpha-globin gene analysis unless otherwise requested not to be performed.

 

Hemoglobin electrophoresis reflex testing, performed at additional charge, may include any or all of the following as indicated to identify rare hemoglobin variants present: sickle solubility (hemoglobin S screen), hemoglobin heat and isopropanol stability studies, isoelectric focusing, HbF distribution by flow cytometry, cation exchange HPLC, DNA (Sanger) testing for beta-chain variants and the most common beta thalassemias (beta-globin gene sequencing), multiplex ligation-dependent probe amplification testing for beta-cluster locus large deletions and duplications, including large deletional hereditary persistence of fetal hemoglobin (HPFH), delta-beta, delta thalassemias, gamma-delta-beta, and epsilon-gamma-delta-beta thalassemias (beta-globin cluster locus deletion/duplication), large deletional alpha thalassemias and alpha-gene duplications (alpha-globin gene analysis), alpha-chain variants and nondeletional alpha thalassemias (alpha-globin gene sequencing), and gamma-chain variants and nondeletional HPFH (gamma-globin full gene sequencing).

 

An additional consultative interpretation that summarizes all testing will be provided after test completion to incorporate subsequent results into overall evaluation if any of the following molecular tests are reflexed on this test.

-ATHAL / Alpha-Globin Gene Analysis, Varies

-WASQR / Alpha-Globin Gene Sequencing, Blood

-WBSQR / Beta-Globin Gene Sequencing, Blood

-WBDDR / Beta-Globin Cluster Locus Deletion/Duplication, Blood

-WGSQR / Gamma-Globin Full Gene Sequencing, Varies

The results of the individual protein and molecular tests will be released as they are completed; with a final summary interpretation report correlating all performed testing with any clinical information or complete blood cell count results received.

 

For more information see Benign Hematology Evaluation Comparison

Clinical Information
Discusses physiology, pathophysiology, and general clinical aspects, as they relate to a laboratory test

This consultative study is primarily designed for the evaluation of microcytosis but also has the ability to test for the detection of almost all known hemoglobin disorders in an economical manner. Because this can include multiple tests for alpha thalassemias, beta thalassemias, delta-beta thalassemia, hereditary persistence of fetal hemoglobin (HPFH), and for all known hemoglobin (Hb) variants, an expert in these disorders can guide testing to explain the clinical question or reported complete blood cell count values. This evaluation is particularly useful for complete classification of compound combinations of HbS with alpha or beta thalassemia, HbE/beta-0-thalassemia, and many other complex alpha and beta thalassemia disorders. Since iron deficiency can mimic thalassemias, ferritin levels are measured to evaluate this possibility if a serum sample is received.

 

Hb disorders include those associated with thalassemias (decreased protein quantity) and Hb variants (abnormal protein production). Many are clinically harmless, and others cause symptoms, including microcytosis, sickling disorders, hemolysis, erythrocytosis, cyanosis/hypoxia, long-standing or familial anemia, compensated or episodic anemia, and increased methemoglobin or sulfhemoglobin results. Hb disorders can show patterns of either autosomal recessive or autosomal dominant inheritance.

 

The thalassemias are a group of disorders of Hb synthesis. Normal adult Hb consists of 2 alpha-globin chains (encoded by 2 pairs of alpha-globin genes, each pair located on chromosome 16), and 2 beta-globin chains (encoded by 2 beta-globin genes, each located on chromosome 11). Thalassemia syndromes result from an underproduction of 1 or 2 types of globin chains and are characterized by the type (alpha, beta, delta, gamma) and magnitude of underproduction (number of defective genes) and the severity of clinical symptoms (minor, intermedia, major). The severity of the clinical and hematologic effects is directly related to the imbalance of alpha-like to beta-like chains.

 

The most common form of thalassemia is alpha thalassemia. Alpha thalassemia usually involves deletion of entire alpha genes and varies in severity depending on the number of alpha chains deleted (or rendered nonfunctional). Alpha thalassemia trait usually results from the deletion of 2 alpha genes. The most common form of HbH disease, results from dysfunction of 3 alpha chains, and shows a variable phenotype with most showing moderate anemia. The deletion of all 4 alpha genes (Barts hydrops fetalis) is incompatible with life without significant medical intervention. Nondeletional alpha thalassemia alterations can also result in either thalassemia trait or HbH disease and are less common than deletional forms.

 

Conversely most beta thalassemia alterations are due to single nucleotide substitutions that can occur anywhere in the beta-globin gene. Large deletions of the beta-globin gene complex can result in elevations in HbF, such as HPFH or delta-beta thalassemia. While the presence of a single beta-gene variants (beta thalassemia trait) results primarily in red blood cells microcytosis, cases with 2 beta-gene abnormalities show a wide range in clinical severity, and many cases require molecular testing to understand the phenotype.

Reference Values
Describes reference intervals and additional information for interpretation of test results. May include intervals based on age and sex when appropriate. Intervals are Mayo-derived, unless otherwise designated. If an interpretive report is provided, the reference value field will state this.

Definitive results and an interpretive report will be provided.

Interpretation
Provides information to assist in interpretation of the test results

A hematopathologist expert in these disorders evaluates the case, appropriate tests are performed, and an interpretive report is issued.

Cautions
Discusses conditions that may cause diagnostic confusion, including improper specimen collection and handling, inappropriate test selection, and interfering substances

DNA probe studies reveal deletional alterations that include most, but not all, alpha thalassemias.

Clinical Reference
Recommendations for in-depth reading of a clinical nature

1. Hoyer JD, Hoffman DR: The thalassemia and hemoglobinopathy syndromes. In: McClatchey KD, Amin HM, Curry JL, eds. Clinical Laboratory Medicine. 2nd ed. Lippencott Williams and Wilkins; 2002:866-892

2. Brancaleoni V, Di Pierro E, Motta I, Cappellini MD: Laboratory diagnosis of thalassemia. Int J Lab Hematol. 2016 May;38 Suppl 1:32-40

3. Hartveld C: State of the art and new developments in molecular diagnostics for hemoglobinopathies in multiethnic societies. Int J Lab Hematol. 2014 Feb;36:1-12

Method Description
Describes how the test is performed and provides a method-specific reference

Hemoglobin Electrophoresis:

The CAPILLARYS System is an automated system that uses capillary electrophoresis to separate charged molecules by their electrophoretic mobility in an alkaline buffer. Separation occurs according to the electrolyte pH and electro-osmotic flow. A sample dilution with hemolyzing solution is injected by aspiration. A high voltage protein separation occurs, and direct detection of the hemoglobin protein fractions is at 415 nm, which is specific to hemoglobins. The resulting electropherogram peaks are evaluated for pattern abnormalities and are quantified as a percentage of the total hemoglobin present. Examples of position of commonly found hemoglobin fractions are, from cathode to anode: HbA2', C, A2/O-Arab, E, S, D, G-Philadelphia, F, A, Hope, Bart, J, N-Baltimore, and H.(Louahabi A, Philippe M, Lali S, Wallemacq P, Maisin D: Evaluation of a new Sebia kit for analysis of hemoglobin fractions and variants on the Capillarys system. Clin Chem Lab Med. 2006;44[3]:340-345; Instruction manual: CAPILLARYS Hemoglobin(E) using the CAPILLARYS 2 flex-piercing instrument. Sebia; 06/2014)

 

High-Performance Liquid Chromatography Hemoglobin Variant:

Hemolysate of whole blood is injected into an analysis stream passing through a cation exchange column using high-performance liquid chromatography. A preprogrammed gradient controls the elution buffer mixture that also passes through the analytical cartridge. The ionic strength of the elution buffer is raised by increasing the percentage of a second buffer. As the ionic strength of the buffer increases the more strongly retained hemoglobins elute from the cartridge. Absorbance changes are detected by a dual-wavelength filter photometer. Changes in absorbance are displayed as a chromatogram of absorbance versus time.( Huismann TH, Scroeder WA, Brodie AN, Mayson SM, Jakway J: Microchromotography of hemoglobins. III. A simplified procedure for the determination of hemoglobin A2. J Lab Clin Med. 1975;86:700-702; Ou CN, Buffone GJ, Reimer GL, Alpert AJ: High-performance liquid chromatography of human hemoglobins on a new cation exchanger. J Chromatogr. 1983;266:197-205; Szuberski J, Oliveira JL, Hoyer JD: A comprehensive analysis of hemoglobin variants by high-performance liquid chromatography (HPLC). Int J Lab Hematol. 2012 Dec; 34(6):594-604; Instruction manual: Bio-Rad Variant II Beta-thalassemia Short Program Instructions for Use, L70203705. Bio-Rad Laboratories, Inc; 11/2011)

 

Ferritin:

The Roche ferritin method employs monoclonal antibodies specifically directed against ferritin. A biotinylated monoclonal antibody and a second monoclonal antibody labeled with a ruthenium complex react to form a sandwich complex. After the addition of streptavidin-coated microparticles, the complex becomes bound to the solid phase via interaction of biotin and streptavidin. The reaction mixture is aspirated into the measuring cell where the microparticles are magnetically captured onto the surface of the electrode. Application of a voltage to the electrode then induces chemiluminescent emission, which is measured by a photo multiplier. (Package insert: Elecsys Ferritin. Roche Diagnostics; 10/2022)

PDF Report
Indicates whether the report includes an additional document with charts, images or other enriched information

No

Day(s) Performed
Outlines the days the test is performed. This field reflects the day that the sample must be in the testing laboratory to begin the testing process and includes any specimen preparation and processing time before the test is performed. Some tests are listed as continuously performed, which means that assays are performed multiple times during the day.

Monday through Thursday

Report Available
The interval of time (receipt of sample at Mayo Clinic Laboratories to results available) taking into account standard setup days and weekends. The first day is the time that it typically takes for a result to be available. The last day is the time it might take, accounting for any necessary repeated testing.

2 to 25 days

Specimen Retention Time
Outlines the length of time after testing that a specimen is kept in the laboratory before it is discarded

7 days; abnormal samples: 14 days

Performing Laboratory Location
Indicates the location of the laboratory that performs the test

Rochester

Fees
Several factors determine the fee charged to perform a test. Contact your U.S. or International Regional Manager for information about establishing a fee schedule or to learn more about resources to optimize test selection.

  • Authorized users can sign in to Test Prices for detailed fee information.
  • Clients without access to Test Prices can contact Customer Service 24 hours a day, seven days a week.
  • Prospective clients should contact their account representative. For assistance, contact Customer Service.

Test Classification
Provides information regarding the medical device classification for laboratory test kits and reagents. Tests may be classified as cleared or approved by the US Food and Drug Administration (FDA) and used per manufacturer instructions, or as products that do not undergo full FDA review and approval, and are then labeled as an Analyte Specific Reagent (ASR) product.

This test was developed and its performance characteristics determined by Mayo Clinic in a manner consistent with CLIA requirements. It has not been cleared or approved by the US Food and Drug Administration.

CPT Code Information
Provides guidance in determining the appropriate Current Procedural Terminology (CPT) code(s) information for each test or profile. The listed CPT codes reflect Mayo Clinic Laboratories interpretation of CPT coding requirements. It is the responsibility of each laboratory to determine correct CPT codes to use for billing.

CPT codes are provided by the performing laboratory.

83020-26-Hemoglobinopathy Interpretation

83020-Hb Variant, A2 and F Quantitation

83021

82728

82664 (if appropriate)

83068 (if appropriate)

83789 (if appropriate)

88184 (if appropriate)

LOINC® Information
Provides guidance in determining the Logical Observation Identifiers Names and Codes (LOINC) values for the order and results codes of this test. LOINC values are provided by the performing laboratory.

Test Id Test Order Name Order LOINC Value
THEV1 Thalassemia and Hemoglobinopathy Ev In Process
Result Id Test Result Name Result LOINC Value
Applies only to results expressed in units of measure originally reported by the performing laboratory. These values do not apply to results that are converted to other units of measure.
41927 Hb A 20572-4
41928 Hb F 32682-7
41929 Hb A2 4552-6
41930 Variant 1 24469-9
41931 Variant 2 24469-9
41932 Variant 3 24469-9
41933 HGBCE Interpretation 78748-1
FERR1 Ferritin, S 20567-4
65615 HPLC Hb Variant, B No LOINC Needed
608425 Hemoglobinopathy Interpretation 13514-5
608868 Reviewed By 18771-6

Test Setup Resources

Setup Files
Test setup information contains test file definition details to support order and result interfacing between Mayo Clinic Laboratories and your Laboratory Information System.

Excel | PHP Pdf | CMS Pdf

Sample Reports
Normal and Abnormal sample reports are provided as references for report appearance.

Normal Reports | Abnormal Reports

SI Sample Reports
International System (SI) of Unit reports are provided for a limited number of tests. These reports are intended for international account use and are only available through MayoLINK accounts that have been defined to receive them.

SI Normal Reports | SI Abnormal Reports