Fetal Bleed Screen
Label Mnemonic: FBST
Epic Lab Code: LAB4367
Downtime Form: A-1a Blood Center Request
DeGowin Blood Center - Blood Bank
C271 GH
356-2561
Specimen(s):
Blood
Collection Medium:
or
Pink top tube 6 mL (K2-EDTA) Lavender top tube 3 mL (EDTA)
Minimum:
2 mL; maternal specimen
Rejection Criteria:
Specimen must be labeled with patient's first and last name and medical record number. Specimens will be rejected if information is not on the label when received.
Testing Schedule:
24 hrs/day, 7 days a week, including holidays.
Turn Around Time:
2 hours (upon receipt in laboratory)
Reference Range:
Negative result means no abnormal amount of fetal red blood cells has been detected in the maternal circulation.
Comments:
Fetal blood screening test will only be performed when fetus/infant has been typed as Rh-positive.

Quantitative assay will automatically be ordered if the screen is positive.
Test Limitations:
This testing is not appropriate to detect fetal bleed in Rh positive female.
Methodology:
Indicator cell rosette test for fetomaternal hemorrhage
CPT Code:
86905