FETAL MATERNAL HEMORRHAGE by FLOW CYTOMETRY

Message

Test Code

FEHGB

Alias/See Also

Kleihaur-Betke;Kleihaur Betke;Fetal bleed;Fetal Hemoglobin

CPT Codes
88184

Preferred Specimen

1 Lavender tube (EDTA)

Minimum Volume

5 mL

Other Acceptable Specimens

or 1 Pink tube (EDTA)

Instructions

Refrigerate specimen

Transport Temperature

Refrigerate

Specimen Stability

15-30°C up to 24 hours
2-8°C up to 3 days

Reject Criteria (Eg, hemolysis? Lipemia? Thaw/Other?)

The following conditions will result in a rejection sample:

Hemolyzed
Clotted
Frozen samples will be rejected

Methodology
Flow cytometry

Setup Schedule

M, T, W, Th, F: 07:00 - 22:00 with 12 hour TAT from receipt

Sa, Su, Holidays: 24 hour TAT from receipt

Report Available

M, T, W, Th, F: 07:00 - 22:00 with 12 hour TAT from receipt

Sa, Su, Holidays: 24 hour TAT from receipt

Reference Range

<0.15% fetal cells
<8.00 mL fetal bleed

Clinical Significance

This test detects and quantifies the percent of fetal cells in the mother&rsquos circulation. It is used to determine dosage of Rh immune globin (Rho-GAM) required to prevent Rh sensitization of an Rh negative mother. It is also used as an aid in identifying fetal-maternal hemorrhage to evaluate possible trauma to the fetus.

Note: If the Fetal Maternal Hemorrhage by Flow Cytometry test is not available, the Kleihauer-Betke test can be performed.

Performed By
Alverno Laboratories

Performing Laboratory
Alverno Central Lab
NMB10 (Molecular Biology, Flow)

Last Updated: June 7, 2023

The CPT Codes provided in this document are based on AMA guidelines and are for informational purposes only. CPT coding is the sole responsibility of the billing party. Please direct any questions regarding coding to the payor being billed. Any Profile/panel component may be ordered separately. Reflex tests are performed at an additional charge.