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Test Code BTR Isoagglutinin Titer, Anti-B, Serum

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.

Useful For

Evaluation of individuals with possible hypogammaglobulinemia

Method Name


Reporting Name

Isoagglutinin Titer, Anti-B

Specimen Type

Serum Red

Specimen 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

Reference Values

Interpretation depends on clinical setting. No defined reference values.

Day(s) Performed

Monday through Friday, Sunday

Report Available

1 to 4 days

Performing Laboratory

Mayo Clinic Laboratories in Rochester

Test 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


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


If not ordering electronically, complete, print, and send a Benign Hematology Test Request Form (T755) with the specimen.