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HelpTest Code LAB129 Thyroid-Stimulating Hormone (TSH), Plasma or Serum
Reporting Title
TSH 3rd Generation
Methodology
Roche Diagnostics, Electrochemiluminescence Immunoassay-RMH, GMC, DH, DMH, GMH, WECC, PMH, GCMH, BH, OBH, MGH, MH, HMH, SH, SMC, VWH
Used as a primary test for differential diagnosis of thyroid disease and as an aid in monitoring adequacy of thyroid hormone replacement therapy.
Performing Laboratory
OhioHealth Laboratory Services - RMH, GMC, DH ,DMH, MGH, GMH, HMH, OBH, MH, SH, WECC, GCMH, BH, PMH, SMC and VWH Core Laboratories
Specimen Requirements
Collection Instructions:
1. Serum and Plasma gel tubes should be centrifuged within 2 hours of collection.
2. Red-top tubes should be centrifuged and aliquoted within 2 hours of collection.
Submit only 1 of the following specimens:
Preferred:
Serum
Draw blood in a gold-top serum gel tube(s). Spin down and send 0.5 mL of serum refrigerated.
Note:
1. A speckled-top serum gel tube (s) or a plain, red-top tube(s) is also acceptable.
2. Heterophile antibodies may interfere with this assay.
3. Indicate serum on request form.
4. Label specimen appropriately (serum).
Roche Specimen Stability Information
| Specimen Type | Temperature | Time |
|---|---|---|
| Serum or plasma | Refrigerated | 14 days |
| Ambient | 8 days | |
| Frozen | 24 months |
Specimen Transport Temperature
Refrigerate/Frozen/Ambient -All OK
Reference Values
0-5 d: 0.7-15.2 microIU/mL
6d-2 mo: 0.7-11.0
3-11 mo: 0.7-8.4
1-5 y: 0.7-6.0
6-10 y: 0.6-4.8
11-18 y: 0.5-4.3
≥ 19 y:
0.27-4.2 microIU/mL (euthyroid)
<0.1 microIU/mL (hyperthyroid)
>7.1 microIU/mL (hypothyroid)
Day(s) Test Set Up
Monday through Sunday; Continuously
Test Classification and CPT Coding
84443