Coombs, Direct Fractionation

Specimen Requirements

3.0 mL Whole Blood in a Lavender Top Tube - EDTA

Alternate Specimen

 

TransportAndStorage

24 hours Ambient 
72 hours Refrigerated

This Blood Bank test should be performed within 72 hours. If longer than 72 hours patient should be redrawn.

Collection Instructions

Specimen should be labeled with the patient's name, date and time of collection, [date of birth and/or social security number] and the phlebotomist's (collector's) initials

Minimum Volume

1.0 mL Whole Blood in Pink Top Tube

Neonatal Volumne

Peds: 1.0 mL Whole blood from 2 Lav Microtainers

Reference Range:

Negative

Test Comments:

This test is ordered and charged when a Direct Coombs test is positive on any 6 months or older

Methodology:

• Hemagglutination

CDM

01495158

CPT Coding

86880 x 2