Hemoglobinopathy Evaluation
Test code
CPT code(s)*
Test resources
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Details
Includes
Hemoglobin A, Hemoglobin F, Hemoglobin A2 (Quant), Hemoglobin S, Hemoglobin C, Hemoglobin E, and any hemoglobin variants
Red Blood Cell Count, Hemoglobin, Hematocrit, MCV, MCH, RDW
Methodology
Electronic Sizing and Counting/Cytometry • Capillary Electrophoresis followed by, if necessary, High Performance Liquid Chromatography (HPLC)
Alternative name(s)
HGB Evaluation,Hemoglobin A2,Hemoglobin Variants,HGB Variants,Hemoglobin Electrophoresis,HGB Electrophoresis,Hemoglobin S,Thalassemia Screen,HB A2,HB F,HB S,Hemoglobin F
Specimen requirements | |
|---|---|
| Patient preparation | None Specified |
| Preferred specimen(s) | 1 full (5 mL) EDTA (lavender-top) tube |
| Alternative specimen(s) | Whole blood collected in: EDTA (tan-top), (pink-top) or (royal blue-top) tube |
| Minimum volume | 1 mL |
| Collection instructions | Patient age and ethnicity are necessary for proper interpretation. Blood transfusions within the last 4 months may affect results. Note: If tube drawn is shared with lead testing, trace metal-free EDTA (i.e. royal blue-top or tan-top) tube is required. |
| Transport container | EDTA (lavender-top) tube |
| Transport temperature | Refrigerated (cold packs) |
| Specimen stability | Room temperature: 72 hours |
| Reject criteria | Gross hemolysis • Clotted |
Reference ranges are provided as general guidance only. To interpret test results use the reference range in the laboratory report.
*The CPT codes provided are based on AMA guidance and are for informational purposes only. CPT coding is the sole responsibility of the billing party. Please direct any questions regarding coding to the payer being billed.
This material contains content from LOINC® (http://loinc.org). The LOINC Table, LOINC Table Core are copyright © 1995-2019, Regenstrief Institute, Inc. and the Logical Observation Identifiers Names and Codes (LOINC) Committee and is available at no cost under the license at http://loinc.org/license.
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