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Thyroid stimulating hormone, serum

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Test Name Thyroid stimulating hormone, serum
Test Code TSHB (progressive testing) or
TSHBO (TSH only - progressive testing not performed)
Synonym(s) TSH
Thyrotropin
Collection Device/ Tube Type  5 mL blood - gold top serum separator tube (gel)
Submission Requirements 1 mL serum
Additional Comments Initial screening procedure to assess thyroid function. 
  •  If TSHB is < 0.20 or >6.10 and <18.00 mU/L, a free T4 will be requested.
  •  If the free T4 is >9.0 and <23.1 pmol/L, a free T3 will be requested. 
  •  If TSHBO is requested, progressive testing will not be performed.
Frequency of Testing Daily
Reference Ranges
Age TSH mU/L
   14 yrs - Adult 0.20 - 4.00
   5 yrs - <14 yrs 0.30 - 5.00
   1 yr - <5 yrs 0.40 - 6.00
   77 days - <1 yr 0.40 - 7.00
   14 days - 76 days   1.00 - 10.00
   0 days - 13 days 1.00 - 25.00
   
Last Updated 25 November 2015

 

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