Test Details
Methodology
Antiglobulin test
Result Turnaround Time
1 - 4 days
Turnaround time is defined as the usual number of days from the date of pickup of a specimen for testing to when the result is released to the ordering provider. In some cases, additional time should be allowed for additional confirmatory or additional reflex tests. Testing schedules may vary.
Test Includes
Antiglobulin titer; red cell antibody identification
Use
Identification of red cell antibodies and titration of those antibodies which may be clinically significant during pregnancy or transfusion. This test is automatically performed whenever the antibody screening test is positive.
Special Instructions
This test should only be ordered if the patient has a previous history of a positive antibody screening test.
Limitations
Specimens drawn within six months after administration of Rh immune globulin may contain passively administered anti-D. If the mother is Rh-negative, her specimen should be collected before Rh immune globulin is administered. Extremely low-titered antibodies may be too weak to identify.
References
Specimen Requirements
Specimen
Whole blood
Volume
8 mL whole blood
Minimum Volume
4 mL whole blood
Container
Lavender-top (EDTA) tube. Do not use a gel-barrier tube.
Storage Instructions
Specimens should be tested as soon as possible or within 72 hours of collection. Samples that cannot be tested immediately should be stored at 2°C to 8°C. Do not freeze.
Causes for Rejection
Gross hemolysis; bacterial or other contamination
LOINC® Map
| Order Code | Order Code Name | Order Loinc | Result Code | Result Code Name | UofM | Result LOINC |
|---|---|---|---|---|---|---|
| 006213 | Antibody Identification | 888-8 | 019786 | Antibody Id. #1 | 888-8 | |
| 006213 | Antibody Identification | 888-8 | 019802 | Coombs Titer #1 | 50970-3 | |
| 006213 | Antibody Identification | 888-8 | 019810 | Antibody Id. #2 | 888-8 | |
| 006213 | Antibody Identification | 888-8 | 019836 | Coombs Titer #2 | 50970-3 | |
| Order Code | 006213 | |||||
| Order Code Name | Antibody Identification | |||||
| Order Loinc | 888-8 | |||||
| Result Code | 019786 | |||||
| Result Code Name | Antibody Id. #1 | |||||
| UofM | ||||||
| Result LOINC | 888-8 | |||||
| Order Code | 006213 | |||||
| Order Code Name | Antibody Identification | |||||
| Order Loinc | 888-8 | |||||
| Result Code | 019802 | |||||
| Result Code Name | Coombs Titer #1 | |||||
| UofM | ||||||
| Result LOINC | 50970-3 | |||||
| Order Code | 006213 | |||||
| Order Code Name | Antibody Identification | |||||
| Order Loinc | 888-8 | |||||
| Result Code | 019810 | |||||
| Result Code Name | Antibody Id. #2 | |||||
| UofM | ||||||
| Result LOINC | 888-8 | |||||
| Order Code | 006213 | |||||
| Order Code Name | Antibody Identification | |||||
| Order Loinc | 888-8 | |||||
| Result Code | 019836 | |||||
| Result Code Name | Coombs Titer #2 | |||||
| UofM | ||||||
| Result LOINC | 50970-3 |
| Order Code | Order Name | Result Code | Result Name | UofM | Result LOINC | |
|---|---|---|---|---|---|---|
| Reflex 1 | 114155 | Antibody Identification | 114035 | Antibody Id. #1 | 888-8 | |
| Reflex 1 | ||||||
| Order Code | 114155 | |||||
| Order Name | Antibody Identification | |||||
| Result Code | 114035 | |||||
| Result Name | Antibody Id. #1 | |||||
| UofM | ||||||
| Result LOINC | 888-8 | |||||
| Order Code | Order Name | Result Code | Result Name | UofM | Result LOINC | |
|---|---|---|---|---|---|---|
| Reflex 1 | 114155 | Antibody Identification | 114036 | Coombs Titer #1 | 50970-3 | |
| Reflex 1 | ||||||
| Order Code | 114155 | |||||
| Order Name | Antibody Identification | |||||
| Result Code | 114036 | |||||
| Result Name | Coombs Titer #1 | |||||
| UofM | ||||||
| Result LOINC | 50970-3 | |||||
| Order Code | Order Name | Result Code | Result Name | UofM | Result LOINC | |
|---|---|---|---|---|---|---|
| Reflex 1 | 114155 | Antibody Identification | 114037 | Antibody Id. #2 | 888-8 | |
| Reflex 1 | ||||||
| Order Code | 114155 | |||||
| Order Name | Antibody Identification | |||||
| Result Code | 114037 | |||||
| Result Name | Antibody Id. #2 | |||||
| UofM | ||||||
| Result LOINC | 888-8 | |||||
| Order Code | Order Name | Result Code | Result Name | UofM | Result LOINC | |
|---|---|---|---|---|---|---|
| Reflex 1 | 114155 | Antibody Identification | 114038 | Coombs Titer #2 | 50970-3 | |
| Reflex 1 | ||||||
| Order Code | 114155 | |||||
| Order Name | Antibody Identification | |||||
| Result Code | 114038 | |||||
| Result Name | Coombs Titer #2 | |||||
| UofM | ||||||
| Result LOINC | 50970-3 | |||||