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Fetal Hemoglobin
Test CodeFHGB
Alias/See Also
Epic: LAB292
Quest: 513
Quest: 513
CPT Codes
83020
Preferred Specimen
5 mL whole blood collected in an EDTA (lavender-top) tube
Patient Preparation
Blood transfusions within the last 4 months may affect results
Minimum Volume
1 mL
Instructions
If a CBC is also ordered, submit a separate EDTA (lavender-top) tube
Transport Temperature
Room temperature
Specimen Stability
Room temperature: 5 days
Refrigerated: 7 days
Frozen: Unacceptable
Refrigerated: 7 days
Frozen: Unacceptable
Reject Criteria (Eg, hemolysis? Lipemia? Thaw/Other?)
Hemolysis• Clotted
Methodology
Capillary Electrophoresis
Setup Schedule
Set up: Sun, Tues-Sat; Report available: 1-3 days
Reference Range
0-3 Months | 40.0-85.0 % |
>3-6 Months | 8.0-40.0 % |
>6 Months-1 Year | <8.0 % |
>1 Year | <2.0 % |
Clinical Significance
Fetal hemoglobin is increased in sickle cell anemia, leukemias, beta-thalassemia and hereditary persistence of fetal hemoglobin. The production of fetal hemoglobin may be triggered as a response to sickle crisis.
Performing Laboratory
Quest Diagnostics Nichols Institute
14225 Newbrook Dr
Chantilly, VA 20153
Last Updated: August 15, 2023
Last Review: N. Wolford, August 15, 2023