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Test Code TPOAB Thyroid Peroxidase Antibody, LAB858


Competitive Immunoassay using Chemiluminescence

Performing Laboratory

St. Luke's Hospital Cedar Rapids

Specimen Requirements


Preferred: Mint Green-top (heparinized) tube with separator, plasma

Acceptable: Gold-top serum gel tube, Plain Red-top tube, Green-top (heparinized) tube, or lavender-top (EDTA) tube 

Specimen Volume: 180 uL of serum or plasma

Stability: Do not use samples that have been stored at room temperature for longer than 8 hours. Store specimens at 2-8ºC for 48 hours or for longer storage, place in freezer at ≤20ºC.

Collection Instructions: Allow samples to clot adequately before centrifugation.  Samples should be free of fibrin or other particulate matter before placing samples on the system. Avoid hemolyzing specimen during collection.

Reference Values

0-59 U/mL

Day(s) Test Set Up

Monday through Friday

Test Classification and CPT Coding


Useful For

The measurement of autoantibodies against thyroid peroxidase is useful in identifying patients with autoimmune thyroid disease. 

Analytic Time

STAT within 1 hour upon receipt

ROUTINE within 2 hours upon receipt