Thyroid Stimulating Hormone

Last Modified: 8/30/2023 12:56:13 PM


  Medicare Medical Necessity Restrictions May Apply
Medical Necessity Documentation:  
Client Notes:  
Patient Preparation:  
Specimen Requirements:

1.0 mL Plasma in a PST Mint Green Top Tube - Li Heparin (preferred)
or 
1.0 mL Serum in a SST Gold Top Tube 
Collection Instructions:  
Minimum Volume: 0.5 mL Serum
Transport & Storage: Temperature/Stability: 7 days Refrigerated


24 hours unspun
Reference Range:

0.25 - 4.50 uIU/ml
Critical Ranges:  
Test Comments: The American Association of Clinical Endocrinologists recommends an adult reference range of 0.3-3.0 uIU/ml.

Pediatric Reference Range not established

It has been noticed that allopurinol may falsely elevate TSH level. Cotesting with Free T4 and correlation with clinical symptoms are recommended in evaluation of thyroid function in this subset of patients.

This assay utilizes biotin technology. Patients taking vitamin supplements containing high doses of biotin (>5 mg/day) may have falsely decreased test results generated.
Methodology: ECLIA
Clinical Significance:  
Documentation:  
Custom Panel: No

PRODUCTION SCHEDULE

Days Performed: Sunday, Monday, Tuesday, Wednesday, Thursday, Friday, Saturday
Sites Performed: Parkview Dekalb Hospital, Parkview Huntington Hospital, Parkview LaGrange Hospital, Parkview Noble Hospital, Parkview Randallia Hospital, Parkview Regional Medical Center, Parkview Southwest , Parkview Wabash Hospital, Parkview Warsaw , Parkview Whitley Hospital
PHL Test Code: TSH
EPIC Test Code: LAB129
Alternate Test Names: Thyroid Stimulating Hormone, 3rd Generation; TSH; TSH 3rd Generation; TSH, Ultra; Ultrasensitive TSH
Included Tests:  
CPT Coding: 84443

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