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HelpTest Code TPO Anti-Thyroid Peroxidase Antibody (Anti-TPO)
Laboratory Code
LAB858
Specimen Requirements
Specimen Type: Serum
Container/Tube: Gold Top (SSTII)
Volume: 5.0 mL
Minimum Volume: 0.5 mL serum
Collection Instructions: Allow specimen to clot for 30 mins and centrifuge within 2 hrs.
Specimen Stability
| Specien Type | Serum |
|---|---|
| Ambient | 8 hours |
| Refrigerate | 72 hours |
| Frozen | 30 days |
Methodology
Chemiluminescent Immunoassay
Days and Times Performed
24 hrs, TAT 1 day
Specimen Condition
| Haemolysis | OK |
|---|---|
| Icterus | OK |
| Gross Lipaemia | Alert/Reject |
| Others | Not applicable |
Reference Interval
< 5.6 IU/mL
Testing Laboratory
National University Hospital
Clinical Chemistry, 67724346
Useful For
Diagnosis of thyroid autoimmune disorders.
Differentiating Hashimoto’s thyroiditis and juvenile lymphocytic thyroiditis.
A negative anti-TPO and anti-Tg exclude Hashimoto’s thyroiditis.
Service Code
31901
LOINC Code Information
83118-0
Alias
Antimicrosomal Antibody
Hashimoto Disease
Thyroperoxidase Antibody
Update
Last updated 10/03/2025