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GENERAL TESTING INFORMATION

SPECIMEN COLLECTION INFORMATION

LAB UTILIZATION

GENERAL INFORMATION

 

LINKS

Mayo Clinic Laboratories

Test Code TSH 3 Thyroid Stimulating Hormone 3rd Generation

Aliases

TSH

Patient Preparation

No special patient preparation required

Collection Method

Venous collection

Minimum Volume

  • Adults: 1 mL
  • Pediatric: 0.8 ml

Container

Lt Green / Plasma Separator / Lithium Heparin

Preferred Specimen

Light Green Top (lithium heparin) plasma

Acceptable Specimens

Serum:

  • Gold Top SST
  •  
  • Red Top


Plasma:

 

  • Light Geen Top (lithium heparin)
  • Purple or Pink Top (K2/K3 EDTA)

 

Reference or Target Ranges

0.55 – 4.78 uIU/mL

Reportable Units

uIU/mL

Critical Value

Not defined for this assay

Reasons for Rejection

 


<!-- Rejection-->

 

Hemolysis Threshold 500 mg/dL
Icterus Threshold 40 mg/dL
Lipemia Threshold 1000 mg/dL
Other QNS, contaminated, improperly Labeled, improper specimen type

Specimen Stability

 


<!-- Stability -->

 

Ambient 8 days
Refrigerated (4°C to 8°C) 14 days
Frozen(-40°C to 0°C) 2 years

Performance Information

 


<!-- Performance information -->

 

Days and Time Performed 24/7
Expected Turn Around Time Stat: 1 hour
Routine: 4 hours
Stat Availability Yes
Performing Bench UH Chemistry
Methodology/Method Description Siemens Atellica - Immunoassay

CPT Codes

84443