Test ID: DCTM
Direct Coombs, Blood
Specimen Type 
Describes the specimen type needed 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 72 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: MDCC3/87855 Monospecific Direct Coombs C3, Blood and MDCG/86880 Monospecific Direct Coombs IgG, Blood.
Specimen Minimum Volume Defines the amount of specimen required to perform an assay once, including instrument and container dead space. Submitting the minimum specimen volume makes it impossible to repeat the test or perform confirmatory or perform reflex testing. In some situations, a minimum specimen volume may result in a QNS (quantity not sufficient) result, requiring a second specimen to be collected.
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
| Hemolysis | NA |
| Lipemia | NA |
| Icterus | NA |
| Other | NA |
Specimen Stability Information Provides a description of the temperatures required to transport a specimen to the laboratory. Alternate acceptable temperature(s) are also included.
| Specimen Type | Temperature | Time |
|---|---|---|
| Whole Blood EDTA | Ambient (preferred) | 48 hours |
| Refrigerated | 48 hours |
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