Test Code Billings Clinic: 7003 Cold Agglutinin Titer, Serum

Additional Codes

Ordering Mnemonic
MayoAccess: BCL168

Performing Laboratory

Billings Clinic Laboratory: Serology

Useful For

A titer of ≥1:32 is suggestive of viral pneumonia.
High titers are also seen in African trypanosomiasis, leishmaniasis, hemolytic anemia, mumps orchitis, and Blackwater fever.

Methodology

Red Cell Agglutination at 4° C

Specimen Requirements

Draw blood in a plain, red-top tube(s).
Serum gel tube is not acceptable.
Incubate tube for 60 minutes at 37° C prior to centrifugation.
Do not refrigerate prior to separation of serum from red cells.
Spin down and send 2 mL of serum.

Reject Due To

Specimens drawn in red gel tube

Reference Values

Negative

If positive, results are titered.

Day(s) Test Set Up

Daily

Test Classification and CPT Coding

86157 - Cold agglutinin; titer

LOINC Code Information

Reporting Name	LOINC Code
Cold Agglutinin	5098-9

Specimen Requirements - Specimen Processing

Deliver unspun tube to Hematology for 60 minutes incubation.
After incubation, centrifuge for 10 minutes then deliver back to Hematology.