Ordering Recommendation

Aid in determination of the relative amount of anti-A or anti-B present in serum to evaluate an individual’s ability to mount an immune response. Most often performed on pediatric patients with recurrent infections. 

Mnemonic
IRL ISO M
Methodology

Hemagglutination

Performed

Mon-Fri

Reported

1-3 days

New York DOH Approval Status
This test is New York DOH approved.
Specimen Required
Patient Preparation
Collect

Lavender (K2EDTA), or Pink (K2EDTA).

Specimen Preparation

Do not freeze red cells. Transport 7 mL whole blood. (Min: 3 mL)

Storage/Transport Temperature

Refrigerated.

Unacceptable Conditions

Separator or gel tubes.

Remarks
Stability

Ambient: Unacceptable; Refrigerated: 1 week; Frozen: Unacceptable

Reference Interval

Normals are not applicable.

Interpretive Data



No compliance statements are in use for this test.

Note

Only IgM isohemagglutinin titers based on ABO screening results will be performed for this test. If both IgG and IgM titers are desired, order Isohemagglutinin Titer, IgG & IgM (2000280). Specimens are screened for antibodies; if positive, an antibody panel will be performed. Titers will be performed as indicated for specific blood groups. Additional charges will apply to antibody identification and titer testing.

Hotline History
N/A
CPT Codes

86900; if blood type is A add: 86941; if blood type is B, add: 86941; if blood type is O, add: 86941; 86941. If blood type is AB, no additional titers will be performed.

Components
Component Test Code* Component Chart Name LOINC
2000288 ABO Group ISO Interp 883-9
2000289 Anti A Titer IgM ISO 50762-4
2000290 Anti B Titer IgM ISO 50763-2
* Component test codes cannot be used to order tests. The information provided here is not sufficient for interface builds; for a complete test mix, please click the sidebar link to access the Interface Map.
Aliases
  • Anti-A & B Titer
  • Isohemagglutinin Titer, Anti A
  • Isohemagglutinin Titer, Anti B
Isohemagglutinin Titer, IgM