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HelpTest Code BTR Isoagglutinin Titer, Anti-B, Serum
Reporting Name
Isoagglutinin Titer, Anti-BPerforming Laboratory
Mayo Clinic Laboratories in Rochester
Useful For
Evaluation of individuals with possible hypogammaglobulinemia
Method Name
Hemagglutination
Shipping Instructions
Specimen must arrive within 10 days of collection.
Specimen Required
Supplies: Sarstedt 5 mL Aliquot Tube (T914)
Collection Container/Tube: Red top
Submission Container/Tube: Plastic vial
Specimen Volume: 2.5 mL
Pediatric Volume: 2 mL
Collection Instructions: Centrifuge and aliquot serum into plastic vial.
Specimen Type
Serum RedSpecimen Minimum Volume
1 mL
Specimen Stability Information
| Specimen Type | Temperature | Time | Special Container |
|---|---|---|---|
| Serum Red | Ambient (preferred) | 4 days | |
| Frozen | 10 days | ||
| Refrigerated | 10 days |
Reject Due To
| Gross hemolysis | OK |
Reference Values
Interpretation depends on clinical setting. No defined reference values.
Interpretation
The result is reported as antiglobulin phase, in general representing IgG antibody. The result is the reciprocal of the highest dilution up to 1:1024 at which macroscopic agglutination (1+) is observed. Dilutions above 1:1024 are reported as greater than 1024.
Day(s) Performed
Monday through Friday, Sunday
Report Available
1 to 4 daysTest Classification
This test has been cleared, approved, or is exempt by the US Food and Drug Administration and is used per manufacturer's instructions. Performance characteristics were verified by Mayo Clinic in a manner consistent with CLIA requirements.CPT Code Information
86886
LOINC Code Information
| Test ID | Test Order Name | Order LOINC Value |
|---|---|---|
| BTR | Isoagglutinin Titer, Anti-B | 34464-8 |
| Result ID | Test Result Name | Result LOINC Value |
|---|---|---|
| BTR | Isoagglutinin Titer, Anti-B | 34464-8 |
Forms
If not ordering electronically, complete, print, and send a Benign Hematology Test Request Form (T755) with the specimen.