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Test Code BLOD0667 Kleihauer-Betke, Blood

Useful For

Determining the presence of a fetal bleed by measuring % Hemoglobin F cells in the mother's circulation.  


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



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


Additional Information

For hereditary persistence of fetal hemoglobin, call Bozeman Health Laboratory at 406-414-5010.  The will assist you in ordering test: