Abbrev Code:TSH   
Order Code:LAB129Order Name:TSH
Synonyms:Third Generation Thyroid Stimulating Hormone; Thyrotropin
Methodology:Roche: Electrochemiluminescence immunoassay (ECLIA)
Vista: Chemiluminescence
Woodwinds: CMIA
CPT Codes: 84443 x1, 84443 x1
Turnaround Time:Varies by site.
Associated Links:

Roche Go Live Schedule

Collection Instructions

Optimal Volume:2.5 mL
Minimum\Peds Volume:0.6 mL
Collection Instructions:Chemistry Tests Containers Chart
Contraindications:Large doses of biotin (10 mg or more per day) may cause clinically significant interference in TSH levels. If interference is suspected, it is strongly recommended that biotin is discontinued for at least one week prior to retesting.

Processing and Shipping

Specimen Processing:Centrifuge and aliquot 1.25 mL, 0.2 mL minimum. Store in refrigerator.
Shipping Instructions:Ship at refrigerated temperature.
Stability:Roche: 8 days at room temperature; 14 days refrigerated; 24 months frozen. Freeze only once.
Vista: 7 days refrigerated; indefinitely frozen  
Test Performed at or Referral Lab Chemistry  (CSC Maple Grove, Roche-Grand Itasca, Roche-Lakes, Roche-Northland, Roche-Range, Roche-Ridges, Roche-Southdale, Roche-St. John's, Roche-UMMC East, UMMC/UMMCH-West Bank, Woodwinds)


Critical Range:0-3 years: Greater than 23 mIU/L
Reference Range:Woodwinds:
Age mIU/L
0-7 d 3.2-21.0
7 d & older 0.3-5.0

Age mIU/L
0-3 d 1.0-20.0
4-30 d 0.5-6.5
31 d - 5 mo 0.5-6.0
6 mo & older 0.4-4.0

Age mIU/L
0-5 d 0.7-15.2
6 d - 2 mo 0.7-11.0
3-12 mo 0.7-8.4
1-5 y 0.7-6.0
6-10 y 0.6-4.8
11-19 y 0.5-4.3
20 y & older 0.3-4.2
Use:Evaluate thyroid function in people with intact pituitary glands.

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