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HelpTest Code 8209 Fetal Screen
Purpose
The test is intended for the detection of D-positive red blood cells in D-negative mothers after delivery, indicating a fetal-maternal hemorrhage in excess of 30 ml of whole blood.
Performing Laboratory
Copley Hospital
Methodology
Hemagglutination
Specimen Requirements
Specimen Type: Whole Blood
Preferred: Lavender Top
Acceptable: Pink Top
Specimen Volume: Full Tube
Specimen Minimum Volume: 2 mL
Collection Instructions:
1. Specimen must be collected at least one hour after delivery
of all products of conception and less than 6 hours after.
2. Label specimen with patient’s full name, date of birth,
date & time of collection, and person collecting.
3. Keep specimen refrigerated during transport.
Reference Values
Normal: Negative
Critical: Positive
If the Fetal Hemoglobin is positive a Kleihauer Betke test may
be indicated. Kleihauer Betke testing is done by the laboratory at
UVMMC.
Day(s) Performed
Daily
Available STAT
Analytical Time: 1 Day
Aliases
Fetal Screen
Fetal Maternal Hemorrhage
Rhogam
Test Classification and CPT Coding
85461-Fetal Screen