Betke Kleihauer Test

Alternative Names/Synonyms	BK Test, KB Test, Testing for Fetal Maternal Hemorrhage
Laboratory	Core Laboratory & Transfusion Medicine
Sub-section	Transfusion Medicine
Specimen Type	Blood
Test Code	BK_M

Ordering Instructions, Requisition

MS 327 Blood Transfusion Product Request

Clinical Significance (If applicable)

Used during pregnancy and immediately postpartum to screen maternal blood for the presence of fetal red blood cells. It is mainly used to assess the volume of feto-maternal hemorrage (FMH).

Specimen Requirements (Sample Type)

Peripheral blood

Specimen Requirements (Volume (mL))

6 mL

Specimen Requirements (Tube Type)

1 Pink top K2EDTA
Collection Containers – Tube Types

Collection Requirements

Collect 1 Pink top tube EDTA. Mix well at time of collection
Collection Instructions

Storage / Shipment Details

Send ASAP to Core Laboratory

Sample Stability

Stable for 8 hours at room teperature

Cause for Rejection

Specimen Acceptability and Transport Guidance

Test Availability

24 hours / 7 days

STAT Turnaround Time

Result not verified by Flow Cytometry: 90 min; Result verified by Flow Cytometry :4hr (Flow Cytometry not available on weekends and holidays)

Routine Turnaround Time

90 minutes

Laboratory Contact Information

Tel #: 416-586-4502
Fax #: 416-586-8504

Sample Processing / Delivery

Please deliver to the Core Laboratory, 11th Floor