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HelpOrder Code LAB101 Thyroid-Stimulating Hormone (TSH), Plasma or Serum
Additional Codes
|
Test Name in EPIC |
EPIC Test Code |
Mnemonic |
|
RV THYROID- STIMULATING HORMONE |
LAB101 |
TSH |
Useful For
Diagnosis and monitoring of thyroid disease.
Specimen Requirements
If possible, inform patients to stop taking Biotin (hair, nail) supplements 2-3 days before their lab draw.
Specimen Type: Plasma or Serum
Collection Container/Tube:
Preferred: Green-top (lithium heparin) gel tube
Acceptable: Plain, red-top tube or SST
Specimen Volume: 2 mL
Pediatric (minimum) volume: 0.5 mL
Specimen Stability
| Specimen Type | Temperature | Stability |
| Plasma or Serum | Ambient | 4 hours |
| Refrigerated (preferred) | 7 days | |
| Frozen | 4 weeks |
Reference Values
0.465 - 4.68 mIU/L
Specimens with biotin concentrations up to 2 ng/mL demonstrated a less than or equal to 10% change in results. Biotin concentrations >2 ng/mL may falsely decrease TSH results.
For diagnostic purposes, the results should always be assessed in conjunction with the patient's medical history, clinical examination, and other findings.
If necessary, please refer to Mayo's Thyroid Function Ordering Algorithm for additional ordering information: http://mayomedicallaboratories.com/itmmfiles/Thyroid_Function_Ordering_Algorithm.pdf
Day(s) Test Set Up
Monday through Sunday
Performing Laboratory
Ridgeview Medical Center Laboratory
Two Twelve Medical Center Laboratory
Ridgeview Sibley Medical Center Laboratory
Ridgeview Le Sueur Medical Center Laboratory
Methodology
Immunometric
Test Classification and CPT Coding
84443