Thyroid Stimulating Hormone (TSH)

Last modified by mike_rogers on February 09, 2010 10:21 PM

UNC Hospitals
McLendon Clinical Laboratories
101 Manning Drive
Chapel Hill, NC 27514

3rd Generation

Tube Type

Test ID

TSH

Test Number

1791

SMS Browse

TSH

CPT Code(s)

84443

Group/Individual Test

Individual

Laboratory

Core

Tube Station

Routine: 30
STAT: 888

Specimen

Routine:

4 mL blood/Serum Separator Tube/Gold Top

micro:

2 microtainers/900 µL blood

Availability

Routine:

24 hours/day

STAT:

Yes

Turnaround Time

Routine: 2 hours
STAT: 1 hour

Reference Range

Normal:

0.6-3.30 µIU/mL , ambulatory adults
See table below for other populations.

Comments

For additional specimen information refer to Core Laboratory Memorandum #46

TSH Reference Ranges (µIU/mL)
Pediatric patients¹
	0 - 3 d	1-20
	3 - 30 d	0.5-6.5
	31 d - 5 m	0.5-6.0
	6 m - 18 y	0.5-4.5
Adults, ambulatory, healthy²	>18 y	0.60-3.30
Pregnant, euthyroid patients³		In general, levels trend higher throughout pregnancy
	First trimester	~111% of ref mean
	Second trimester	106-122% of ref mean
	Third trimester	111-132% of ref mean

1. Dugaw KA, Jack RM, Rutledge J Pediatric reference ranges for TSH, free T4, total T4 total T3 and T3 Uptake on the Vitros ECi analyzer. Clin Chem 201; 47: A108.
2. Reference range determined in-house
3. Lockitch G. Handbook of Diagnostic Biochemistry and Hematology in Normal Pregnancy. CRC Press. 1993.

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Thyroid Stimulating Hormone (TSH)

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