Test Overview
Test Usage

To detect IgG Immunoglobulin and/or complement adherence to red cells in immune hemolytic anemia. Recommended to monitor patients who have already had a Direct Antiglobulin Test - Complete Study.

Reference Range *

Negative

* Reference ranges may change over time. Please refer to the original patient report when evaluating results.

Test Limitations

Use of red top tubes or serum separator tubes may cause false positive reactions.

Test Details
Days Set Up
Monday - Friday, 8:00am - 4:00pm
Analytic Time

1 - 72 hours

Soft Order Code
DAT
MiChart Code
C3 DIRECT ANTIGLOBULIN
Synonyms
  • Coombs Test
  • Coombs Antibody
Laboratory
Blood Bank
Section
Blood Bank
Specimen Requirements
Collection Instructions

Collect specimen in a pink top tube. Send intact specimen at room temperature. Specimens are unacceptable if collected in a serum separator tube, contaminated, or grossly hemolyzed. Specimens sent for Blood Bank testing cannot be split for use by other laboratories.

Alternate Specimen
IN-HOUSE: Lavender top tube (intact specimen) may be substituted for Pink top. All other specimen types are unacceptable. MLABS: Pink top tube (intact specimen) is preferred; the following are acceptable: lavender top (glass or plastic), red top (glass only). Plastic red top tubes will be rejected without exception. [10/03; rev 4/04]
Normal Volume
6 mL whole blood
Minimum Volume
2 mL whole blood
Storage Temperature
Ambient
Billing
CPT Code
86880
Fee Code
21256
NY State Approved
No