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HelpTest Code LAB1232134 Hemoglobin F Distribution, Blood
Performing Laboratory
Mayo Clinic Laboratories in Rochester
Reporting Name
Hb F Distribution, BSpecimen Type
Whole Blood EDTAOrdering Guidance
This test is for hereditary persistence of fetal hemoglobin only. For testing for possible fetal-maternal bleed, see FMB / Fetomaternal Bleed, Flow Cytometry, Blood.
Specimen Required
Only orderable as a reflex. For more information see:
-HAEV1 / Hemolytic Anemia Evaluation, Blood
-HBEL1 / Hemoglobin Electrophoresis Evaluation, Blood
-MEV1 / Methemoglobinemia Evaluation, Blood
-REVE2 / Erythrocytosis Evaluation, Blood
-THEV1 / Thalassemia and Hemoglobinopathy Evaluation, Blood and Serum
Reject Due To
| Gross hemolysis | Reject |
| Gross lipemia | OK |
| Clotted blood | Reject |
Specimen Stability Information
| Specimen Type | Temperature | Time |
|---|---|---|
| Whole Blood EDTA | Refrigerated | 14 days |
Specimen Minimum Volume
0.5 mL
Day(s) Performed
Monday through Friday
Specimen Retention Time
1 weekReport Available
3 to 5 daysReference Values
Only orderable as a reflex. For more information see:
-HAEV1 / Hemolytic Anemia Evaluation, Blood
-HBEL1 / Hemoglobin Electrophoresis Evaluation, Blood
-MEV1 / Methemoglobinemia Evaluation, Blood
-REVE2 / Erythrocytosis Evaluation, Blood
-THEV1 / Thalassemia and Hemoglobinopathy Evaluation, Blood and Serum
Reported as: Heterocellular, Homocellular, or Equivocal
Useful For
Distinguishing large deletional hereditary persistence of fetal hemoglobin from other conditions with increased percentage of fetal hemoglobin (HbF)
Determining the distribution of HbF within red blood cells
CPT Code Information
88184
LOINC Code Information
| Test ID | Test Order Name | Order LOINC Value |
|---|---|---|
| HPFH | Hb F Distribution, B | 4579-9 |
| Result ID | Test Result Name | Result LOINC Value |
|---|---|---|
| 8270 | Hb F Distribution, B | 4579-9 |
| 2104 | Interpretation | 59466-3 |