Test Catalog

Test Id : VZIKS

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Zika Virus, PCR, Molecular Detection, Serum

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Overview

Test Catalog

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

Qualitative detection of Zika virus RNA in serum from individuals meeting the Centers of Disease Control and Prevention Zika virus clinical or epidemiologic criteria

Highlights

Provides qualitative detection of Zika virus RNA from serum collected during the acute phase of infection.

 

This test is intended for the evaluation of pregnant women and symptomatic nonpregnant individuals with potential exposure to Zika virus.

 

For the most up to date Zika epidemiology and testing recommendations, visit www.cdc.gov/zika/

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

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

Real-Time Reverse Transcription Polymerase Chain Reaction (RT-PCR)/DNA Probe Hybridization

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

Zika Virus PCR, Serum

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

Microencephaly

Vector-Borne Illness

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

Specimen Type
Describes the specimen type validated for testing

Serum

Ordering Guidance

Due to similar clinical presentations, testing for RNA or IgM-class antibodies to dengue and chikungunya viruses, concurrently with Zika virus testing, is strongly recommended.

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

Collection Container/Tube:

Preferred: Serum gel

Acceptable: Red top

Submission Container: Sterile container

Specimen Volume: 0.5 mL

Collection Instructions:

1. Collect whole blood in a serum gel tube.

2. Centrifuge and aliquot the serum into a sterile container within 6 hours of collection.

3. Label specimen as serum.

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

Forms

If not ordering electronically, complete, print, and send a Microbiology Test Request (T244) with the specimen.

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

0.25 mL

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

  All specimens will be evaluated at Mayo Clinic Laboratories for test suitability

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 (preferred) 7 days
Frozen 7 days

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

Qualitative detection of Zika virus RNA in serum from individuals meeting the Centers of Disease Control and Prevention Zika virus clinical or epidemiologic criteria

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

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

Zika virus is an RNA virus in the genus Flavivirus and is primarily transmitted through the bite of an infected Aedes species mosquito. Other means of transmission include through transfusion of blood and blood products, sexually through genital secretions, perinatally, vertically from mother to fetus, and, potentially, through contact with other body secretions, such as tears and sweat.

 

Historically, most cases of Zika virus infection have occurred in parts of Africa and Southeast Asia. However, Zika virus emerged in South America in early 2015 and is now endemic in over 50 countries in South, Central, and North America, including in several US territories and focal regions of the southern United States.

 

The majority (approximately 80%) of individuals infected with Zika virus are asymptomatic. Fever, headache, retro-orbital pain, conjunctivitis, maculopapular rash, myalgias, and arthralgias are commonly reported among symptomatic patients. Notably, these symptoms are not distinct and can be seen with other emerging arboviruses, including dengue and chikungunya. Therefore, diagnostic testing for each of these viruses is recommended in patients returning form areas where these viruses cocirculate. Intrauterine or prenatal infection with Zika virus has been causally linked to development of microcephaly, with the greatest risk for fetal abnormality occurring if the infection is acquired during the first trimester. Finally, Zika virus has also been associated with development of Guillain-Barre syndrome.

 

A number of Zika virus serologic and nucleic acid amplification tests have received emergency use authorization through the US Food and Drug Administration. The recommended tests vary by the patient's symptoms, course of illness, and whether or not the patient is pregnant.

 

For the most up-to-date information regarding the Centers of Disease Control and Prevention testing guidelines, visit www.cdc.gov/zika/.

 

These guidelines are reflected in Assessment for Zika Virus Infection.

 

Zika virus testing is not recommended for asymptomatic couples attempting conception, given the potential for false-positive and false-negative results. Additionally, it is well established the Zika virus may remain in reproductive fluids despite negative serologic and molecular test results in blood and urine.

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.

Negative

 

Reference values apply to all ages.

Interpretation
Provides information to assist in interpretation of the test results

A positive test result indicates the presence of Zika virus RNA in the specimen.

 

A negative test result with a positive internal control indicates that Zika virus RNA is not detectable in the specimen.

 

A negative test result with a negative internal control is considered evidence of polymerase chain reaction inhibition or reagent failure. A new specimen should be collected for testing if clinically indicated.

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

This assay is for in vitro diagnostic use under the US Food and Drug Administration emergency use authorization only.

 

Negative Zika virus reverse transcription polymerase chain reaction results do not preclude infection with Zika virus and should not be used as the sole basis for patient treatment or management decisions. All results should be interpreted by a trained professional in conjunction with review of the patient's exposure history and clinical signs and symptoms.

 

False-negative results may arise from degradation of Zika virus RNA during incorrect shipping or storage and specimen collection after the period that Zika virus RNA is typically found in the patient (7 days after onset of symptoms).

Supportive Data

The RealStar Zika virus reverse transcription polymerase chain reaction (RT-PCR) Kit US by Altona Diagnostics received emergency use authorization from the US Food and Drug Administration on May 13, 2016.

 

Details regarding the performance characteristics for the RealStar Zika virus RT-PCR kit, as established by Altona Diagnostics, can be viewed at www.fda.gov/media/97712/download

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

1. Oduyebo T, Igbinosa I, Petersen EE, et al: Update: Interim guidance for health care providers caring for women of reproductive age with possible Zika virus exposure-United States, July 2016. MMWR Morb Mortal Wkly Rep. 2016 Jul 25;65(29):739-744

2. United States Food and Drug Administration. Emergency Use Authorizations (Medical Devices). Updated September 7, 2022. Accessed January 3, 2022. Available at www.fda.gov/MedicalDevices/Safety/EmergencySituations/ucm161496.htm

3. Waggoner JJ, Pinsky BA: Zika Virus: Diagnostics for an emerging pandemic threat. J Clin Microbiol. 2016 Apr;54(4):860-867

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

The RealStar Zika Virus RT-PCR Kit by Altona Diagnostics is a TaqMan assay employing a reverse transcriptase (RT) reaction to convert RNA to complementary DNA, followed by polymerase chain reaction (PCR) amplification of specific target sequences and detection by target specific probes. Probes specific for Zika RNA are labeled with the fluorophore FAM. The kit also contains an internal control labeled with the fluorophore JOE. The internal control is added to the nucleic acid extraction procedure and undergoes RT and amplification in parallel to Zika virus-specific RNA that may be present in patient specimens. The different dye-labeled probes allow detection of Zika virus and the internal control simultaneously in corresponding detector channels of the LC 480 instrument. The test can be completed within 120 minutes following RNA extraction and is completed in a closed system.(Package insert: RealStar Zika Virus RT-PCR Kit US. Altona Diagnostics; Version 1.1, 03/2017)

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.

Tuesday, 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.

Same day/1 to 5 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

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.

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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 has received Emergency Use Authorization (EUA) by the US Food and Drug Administration and is used per manufacturer’s instructions. Performance characteristics were verified by Mayo Clinic in a manner consistent with CLIA requirements.

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.

87662

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
VZIKS Zika Virus PCR, Serum 85622-9
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.
619456 Zika Serum PCR Result 85622-9
619457 Zika Serum PCR Interpretation 69048-7

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