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HelpTest Code LAB762 Kleihauer-Betke, Blood
Useful For
Determining the presence of a fetal bleed by measuring % Hemoglobin F cells in the mother's circulation.
Methodology
Fetal Hemoglobin Assay Kit
Performing Laboratory
Bozeman Health Laboratory Services
Specimen Requirements
Specimen Type: Whole blood
Container/Tube: Pink top (K2 EDTA)
Specimen Volume: 4 mL
Collection Instructions: Do not centrifuge. Forward unprocessed whole blood promptly.
Specimen Rejection: Plasma gel tube
Specimen Transport Temperature
Ambient <24 hours/Refrigerated >24 hours
Specimen Stability
| Specimen Type | Temperature | Time |
|---|---|---|
| Whole Blood EDTA | Ambient | 24 hours |
| Refrigerated | 14 days |
Reference Values
Negative
If the mother is a candidate for Rhogam, an absolute number and suggested dosage of Rhogam will be reported with a positive screen.
Critical value (automatic call-back): positive
Day(s) Test Set Up
Monday through Sunday
Test Classification and CPT Coding
85460
Additional Information
For hereditary persistence of fetal hemoglobin, call Bozeman Health Laboratory at 406-414-5010. The will assist you in ordering test: