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Test Code DAT Direct Antiglobulin Test

Clinical System Name

Direct Antiglobulin Test


Coombs, Direct
Direct Antibody Test

Direct Coombs

Sample Requirements

Specimen: Whole Blood

Container(s): Lavender/EDTA

Preferred Vol: 2 mL

                         1 mL minimum


Note: Provider places an order in CIS. Label on specimen and requisition must include: Patient name (as registered), medical record number, and date/time drawn. Information on the label and requisition must match the patient's arm band exactly. Requires 2-person verification at the bedside; both individuals must sign the requisition and phlebotomist's initials must be on the tube. Deliver specimen and requisition to the Lab/Transfusion Service.


Processing Instructions

Reject due to:

Spin: N

Aliquot: N

Temp: RT

Storage location: Deliver labels, specimen and requisition to the blood bank.  


Off-site collection:


STAT Performed TAT
Y Daily 2 hours


Performing Laboratory

Seattle Children's Laboratory


Department:  Transfusion Service

Phone Number:  (206) 987-5151

Reference Range

None specified


Method: None specified

Analytical Volume: None specified


CPT Codes



Request for Testing and Blood Components (downtime)