TEST CATALOG ORDERING & RESULTS SPECIMEN HANDLING CUSTOMER SERVICE EDUCATION & INSIGHTS
Test Catalog

Test ID: SPSM    
Morphology Evaluation (Special Smear), Blood

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

Detecting disease states or syndromes of the white blood cells, red blood cells, or platelet cell lines of a patient's peripheral blood

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

A peripheral blood smear review is performed by a Hematopathologist, at an additional charge, if clinically abnormal results are identified by microscopic examination.

 

If patient has not had a CBC in the last 3 days, one will be performed at an additional charge.

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

Under normal conditions, the morphology and proportion of each blood cell type is fairly consistent in corresponding age groups. The morphology and proportion of each blood cell type may change in various hematologic diseases. Differential leukocyte count and special smear evaluation is helpful in revealing the changes in morphology or proportion of each cell type in the peripheral blood.

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.

1-3 years

Neutrophils/bands: 22-51%

Lymphocytes: 37-73%

Monocytes: 2-11%

Eosinophils: 1-4%

Basophils: 0-2%

Metamyelocytes: 0%

Myelocytes: 0%

 

4-7 years

Neutrophils/bands: 30-65%

Lymphocytes: 29-65%

Monocytes: 2-11%

Eosinophils: 1-4%

Basophils: 0-2%

Metamyelocytes: 0%

Myelocytes: 0%

 

8-13 years

Neutrophils/bands: 35-70%

Lymphocytes: 23-53%

Monocytes: 2-11%

Eosinophils: 1-4%

Basophils: 0-2%

Metamyelocytes: 0%

Myelocytes: 0%

 

Adults

Neutrophils/bands: 50-75%

Lymphocytes: 18-42%

Monocytes: 2-11%

Eosinophils: 1-3%

Basophils: 0-2%

Metamyelocytes: <1%

Myelocytes: <0.5%

 

An interpretive report will be provided.

Interpretation Provides information to assist in interpretation of the test results

The laboratory will provide an interpretive report of percentage of white cells and, if appropriate, evaluation of white cells, red cells, and platelets.

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

A poorly prepared peripheral smear may result in less than optimal interpretation.

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

Practical Diagnosis of Hematologic Disorders: Fifth Edition. Edited by CR Kjeldsberg. Chicago, IL, American Society of Clinical Pathologists, 2010