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T4, Total

Source Blood

  
Mnemonic ICMISC

Misc IC Test Prompt: Total T4

If "T4" is requested, see T4, Free (orderable FT4).

Note to ordering physician: this test is to be used only for monitoring thyroid status in pregnancy and requires review and approval by CLS Medical and Scientific staff. Please contact CLS Immunochemistry 403-770-3267 for further information on the approval process.

 
Specimen Requirements 1 x 3 mL light green (mint) top PST tube. Gold top SST tube also acceptable.

 
Specimen Handling
Additional Information
Testing Location Immunochemistry
Testing Frequency As required

 
Alternate Name(s) Total T4; T4N; Thyroxine, Total

 
Reference Interval
 0-150 years male and female  59-154 nmol/L
 Pregnancy  90-230 nmol/L