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HelpTest Code ABTIR Antibody Titer, Blood and Serum
Shipping Instructions
Specimen must arrive within 72 hours of collection.
Specimen Required
Blood cells, plasma, and serum are required.
Supplies: Sarstedt 5 mL Aliquot Tube (T914)
Specimen Type: Plasma/Blood
Collection Container/Tube: 6-mL Pink top(EDTA)
Submission Container/Tube: Plastic vial
Specimen Volume:
3 mL plasma
3 mL red blood cells (RBC)
Collection Instructions:
1. Centrifuge and aliquot plasma into plastic vial.
2. Label specimens as EDTA plasma or EDTA RBC, as appropriate.
3. Send both tubes.
Specimen Type: Serum/Blood
Collection Container/Tube: 10-mL Red top
Submission Container/Tube: Plastic vial
Specimen Volume:
5 mL serum
5 mL RBC
Collection Instructions:
1. Centrifuge and aliquot serum into plastic vial.
2. Label specimens as serum or clotted RBC, as appropriate.
3. Send both tubes.
Useful For
Monitoring antibody levels during pregnancy to help assess the risk of hemolytic disease of the newborn
This test is not useful for monitoring the efficacy of Rh-immune globulin administration.
Reflex Tests
| Test ID | Reporting Name | Available Separately | Always Performed |
|---|---|---|---|
| ABIDR | Antibody Identification, RBC | Yes | No |
Testing Algorithm
If the antibodies detected are too weakly reactive to titer, this test will be canceled, and the antibody identification will be ordered and performed.
Reporting Name
Antibody Titer, RBCSpecimen Type
VariesSpecimen Minimum Volume
Blood: 6 mL EDTA
Pediatric: 2 mL serum
Specimen Stability Information
| Specimen Type | Temperature | Time | Special Container |
|---|---|---|---|
| Varies | Ambient (preferred) | 4 days | |
| Refrigerated | 4 days |
Reject Due To
No specimen should be rejected.Reference Values
Negative,
If positive, result will be reported as the reciprocal of the highest dilution at with macroscopic agglutination (1+) is observed.
Day(s) Performed
Monday through Friday, Sunday
Report Available
1 to 2 daysSpecimen Retention Time
14 daysPerforming Laboratory
Mayo Clinic Laboratories in Rochester
CPT Code Information
86886
86870 (if appropriate-per panel tested)
86860 (if appropriate)
86880 x 3 (if appropriate)
86905- (if appropriate)
86978 (if appropriate)
81403 (if appropriate)-Internal only
LOINC Code Information
| Test ID | Test Order Name | Order LOINC Value |
|---|---|---|
| ABTIR | Antibody Titer, RBC | 50962-0 |
| Result ID | Test Result Name | Result LOINC Value |
|---|---|---|
| SPECR | Antibody Specificity | 888-8 |
| ALTIR | Allo Antibody Titer | In Process |
| CTPSR | Current Titer of Previous Specimen | In Process |