Last Modified: 10/5/2021 4:59:54 AM

Medical Necessity Documentation:  
Client Notes:  
Patient Preparation:  
Specimen Requirements: 3.0 mL Whole Blood in a Lavender Top Tube - EDTA
Collection Instructions: Specimen to be collected post delivery or immunizing event 

For patients for whom RH Immuno Globulin (RhIG) prophylaxis is indicated, one RhIG dose can be administered STAT, and the laboratory will follow-up when testing is completed if additional doses are recommended.

Minimum Volume: 1.0 mL
Transport & Storage: Temperature/Stability: 24 hours Ambient
2 weeks Refrigerated

Specimen should be assayed as soon as possible after collection, up to 2 weeks, provided the sample was stored refrigerated during first 24 hours.
Reference Range: Percentage of fetal cells in the maternal circulation
Critical Ranges:  
Test Comments:
This test will be performed and charged if a Fetal-Maternal Screen is resulted as positive
Methodology: Acid Stain
Clinical Significance:  
Custom Panel: No


Turn Around Time: 1 to 2 days If received after 1pm, ran next day
Days Performed: Monday, Tuesday, Wednesday, Thursday, Friday, Saturday
Sites Performed: Parkview Regional Medical Center
PHL Test Code: KBT1
EPIC Test Code: LAB2243
Alternate Test Names: Betke-Kleihauer; KB; KBT
Included Tests:  
CPT Coding: 85460

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