Test Code CATTR Cold Agglutinin Titer, Serum
Ordering Guidance
The cold agglutinin test is not specific for Mycoplasma pneumoniae and is not recommended to diagnose M pneumoniae infections. To diagnose M pneumoniae infections, order MPRP / Mycoplasmoides pneumoniae, Molecular Detection, PCR, Varies. For screening recent or past exposure to M pneumoniae, order MYCO / Mycoplasma pneumoniae Antibodies, IgG and IgM, Serum.
Specimen Required
Collection Container/Tube: Red top
Submission Container/Tube: Plastic vial
Specimen Volume: 4 mL
Pediatric Volume: 1 mL
Collections Instructions:
1. Use a warm pack to keep specimen at 37° C prior to and after collecting.
2. Allow specimen to clot at 37° C.
3. Centrifuge at 37° C and aliquot serum into plastic vial immediately after blood clots or within one hour of collection.
4. Do not refrigerate prior to separation of serum from red cells.
Specimen Type
Serum RedSpecimen Minimum Volume
1 mL
Specimen Stability Information
Specimen Type | Temperature | Time | Special Container |
---|---|---|---|
Serum Red | Refrigerated (preferred) | 7 days | |
Frozen | 7 days | ||
Ambient | 72 hours |
Reject Due To
Gross hemolysis | OK |
Gross icterus | OK |
Reference Values
Titer results:
>64: Elevated
>1000: May be indicative of hemolytic anemia
Day(s) Performed
Monday through Friday, Sunday
Report Available
1 to 3 daysSpecimen Retention Time
14 daysPerforming Laboratory
Mayo Clinic Laboratories in RochesterCPT Code Information
86157