Laboratory Test Reference Guide

Test Name

FT4

Synonyms

Free T4, Free Thyroxine

External Price (excl. GST)

7.59

Adult Specimen

Heparin (light green), SST(gold), "T-" labs SST (gold)

Paediatric Specimen

0.4 ml Heparin (light green) or Plain(red).

Department

Biochemistry

Test Availability

Mon - Sun, 24hrs

Laboratory Turnaround Time

3 hrs

Method

Cobas Pro ECLIA "T" LABS - Vitros XT7600

Unit of measurement

pmol/L

Reference interval

Reference interval Attachments

• Paediatric FT4 and TSH reference intervals (Paediatric-FT4-and-TSH-reference-intervals.docx, 13 KB)
• Thyroid function reference intervals during pregnancy (Thyroid-function-reference-intervals-during-pregnancy.docx, 5.3 MB)

Uncertainty of measurement

5%

Minimum Volume

Registration Code

FT4

HL7 mapping code

$FT4

LOINC Code

14920-3