Isohemagglutinin Titer
Also known as: Anti-A Titer, Anti-B Titer, Isoagglutinins
Use
Determine the titer of isohemagglutinins (anti-A and/or anti-B) in serum; the absence of expected isohemagglutinins may suggest an immunological deficiency. This test is not recommended for the determination of immunodeficiency. Dependent upon a variety of factors, normal titers are >1:8.
Special Instructions
Testing schedules may vary, and additional time might be needed for confirmatory or reflex tests. The test includes blood grouping, anti-A titer, anti-B titer, and antibody screen.
Limitations
The presence of cold agglutinins other than anti-A and anti-B may interfere with the interpretation of the test results. Additionally, isohemagglutinins may not be present in newborns, infants younger than six months, and patients who have undergone immunosuppressive therapy, leading to potential inaccuracies in expected ABO isohemagglutinin results.
Methodology
Other
Biomarkers
LOINC Codes
- 18274-1
- 18274-1
- 883-9
- 30314-9
- 30201-8
Result Turnaround Time
3-5 days
Related Documents
For more information, please review the documents below
Specimen
Whole Blood
Volume
4 mL
Minimum Volume
3 mL
Container
Lavender-top (EDTA) tube
Storage Instructions
Refrigerate.
Causes for Rejection
Gross hemolysis; bacterial or other contamination
Other tests from different labs that may be relevant