DCTM - Specimen: Direct Coombs, Blood

Test Catalog

Test Name

Test ID: DCTM    
Direct Coombs, Blood

Specimen Type Describes the specimen type validated for testing

Whole Blood EDTA

Specimen Required Defines the optimal specimen. This field describes the type of specimen required to perform the test and the preferred volume to complete testing. The volume allows automated processing, fastest throughput and, when indicated, repeat or reflex testing.

Specimen must arrive within 48 hours of draw.


Container/Tube: Pink top (EDTA)

Specimen Volume: 6 mL

Additional Information:

1. Diagnosis, medication, and recent transfusion history are required.

2. Monospecific anti-C3, and anti-IgG direct Coombs can be ordered separately using the following codes: MDCC3 / Monospecific Direct Coombs C3, Blood and MDCG / Monospecific Direct Coombs IgG, Blood.

Specimen Minimum Volume The amount of sample necessary to provide a clinically relevant result as determined by the Laboratory.

3 mL of blood in a 6-mL pink EDTA Infants: Heelstick 2 to 3 drops of blood in 0.9% saline

Reject Due To Identifies specimen types and conditions that may cause the specimen to be rejected










Specimen Stability Information Provides a description of the temperatures required to transport a specimen to the laboratory. Alternate acceptable temperatures are also included.

Specimen TypeTemperatureTime
Whole Blood EDTAAmbient (preferred)48 hours
 Refrigerated 48 hours