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Indirect Antiglobulin Test
MessagePerformed in Blood Bank
Related tests: Type and Screen, Type and Cross
Related tests: Type and Screen, Type and Cross
Test Code
IATO
Alias/See Also
Indirect Antiglobulin Test
Coombs Indirect Test
Antibody Screen
EMIAT
Coombs Indirect Test
Antibody Screen
EMIAT
Preferred Specimen
Pink 6.0 mL
Other Acceptable Specimens
Lavender 6.0 mL is usable, but not preferred. Red top tubes are NOT the specimen of choice. Please contact the Blood Bank concerning samples collected in these tubes.
Instructions
None - Special Blood Bank Identification process is not required for IAT testing. However, specimens collected without the Blood Bank Identification process cannot be used for later crossmatch testing.
Report Available
Routine results are available in less than 4 hours. For STAT expected turn-around time, please see hospital specific lab information on the Banner Intranet. A positive antibody screen will require additional testing and additional time.
Reference Range
Clinical Significance
If the IAT is positive, an antibody panel is tested to identify the specific antibodies involved. A positive antibody screen indicates an extended turn-around time for crossmatched blood products.
