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Thyroid Stimulating Hormone

SIM

50295 

CPT

84443 

Synonyms

TSH 

Specimen Type

Serum 

Container

4.0 ml Gold-top serum separator

Collection Instructions

None

Volume

2 ml serum, minimum 0.5 ml

Additional Information

Heterophilic antibodies in human serum can react with reagent immunoglobulins, interfering with in vitro immunoassays.  Patients routinely exposed to animals or to animal serum products can be prone to this interference and anomalous values may be observed.  Additional information may be required for diagnosis.

Patient Preparation

none

Specimen Processing Instructions

Serum:  Allow to clot.  Centrifuge at 3380 rpm’s (±100) for a minimum of 10 minutes

Centrifuge within 2 hours of collection.

Transport Requirements

Refrigerated

Specimen Stability

Room temperature:  8 hours   Refrigerated: 5 days 

Rejection Criteria

If not centrifuged within 2 hours of collection.

Reference Range

0.35 - 5.5 uIU/mL

Critical Value

none 

Test Includes

TSH 

Methodology

Chemiluminescent technology 

Testing Frequency

Daily, Monday - Sunday 

 

Reviewed By

Sandy Hammett 

Reviewed Date

1/31/2018

Supplemental

 

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