Matrix Search - Test Information
| Investigation | Thyroid Function Tests | | Indications | Routine test used to evaluate thyroid gland function and to help diagnose thyroid disorders | | Specimen Type |  Ochre/Yellow top | | Request Form | Blood Sciences or Electronic | | Volume | Fill to line | | Delivery Time | Within 24hrs | | Storage Temp / Special conditions | Stable at room temp for 24hrs | | Turn around time for final test | Urgent 1 hr, Routine 24hrs | | Uncertainty of testing | Should not be requested in the acutely ill | | Reference range | Free T4 11-22 pmol/l, TSH 0.1-4.0 mU/L | | Appropriate testing /re-testing interval | 6 wks | | Related tests | None | | HOW TO guides | None | | Information leaflets | None | | Publications | None | | Guidelines | None |
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