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Test Code 5205 Thyroperoxidase Antibody (Anti-TPO), Serum

Performing Laboratory

Barnes-Jewish Hospital Laboratory


Cobas ECLIA electrochemiluminescence

Literature Reference:

Package insert: Antibodies to Thyroid peroxidase. Anti-TPO. Roche Corporation 03/2014.

Specimen Requirements

Specimen Type: Plasma
Container/Tube: Mint green top
Specimen Volume: Full tube


Additional Information: Specimen stored at ambient temperature for longer than 8 hours cannot be tested.

Day(s) Test Set Up

Tuesday, Thursday
Cut-off time: 1000
Turnaround Time:
STAT: not available

Routine: results available the day of testing

Reference Values

≤34 Units/mL

Literature Reference:

Tietz Fundamental of Clinical Chemistry, 5th Edition, Chapter 55, p. 1918. Saunders, 2014.

Test Classification and CPT Coding


Additional Information

For BJH Laboratory Use Only

Alternate Tube(s):

1 full, 1 full plain red top

Analyte Stability:

Serum or plasma should be separated from RBCs prior to storage.

Ambient temperature: ≤8 hours

2° C to 8° C: ≤48 hours

-20° C: >48 hours

Repeated freeze-thaw cycles should be avoided. Mix thoroughly after thawing by vortexing. Specimen showing particulate matter, RBCs, or turbidity must be centrifuged prior to testing.

Laboratory Processing Instructions:

Test performed in BJH Core lab.  Processed by automated line and aliquot stored frozen for batch analysis.  Completed specimens are stored refrigerated for 5 days.

Specimen Transport Temperature

Refrigerate/Ambient <8 hours OK

LOINC Code Information

Name LOINC Code
Thyroperoxidase Antibody, Serum 8099-4