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Laboratory Information

Test Name

FT3

Synonyms

Free T3, Free Triiodothyronine

External Price (excl. GST)

8.79

Specimen Collection

Adult Specimen

Heparin (light green), SST (gold)

Paediatric Specimen

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

Test Information

Department

Biochemistry

Test Availability

Mon - Sun, 24hrs

Laboratory Turnaround Time

3 hrs

Method

Cobas Pro ECLIA

Unit of measurement

pmol/L

Reference interval

During pregnancy - see attachment

Age	Reference interval in pmol/L
1 - 6 days	1.7 - 11
7 days to < 7 years	3 - 10
7 years to < 19 years	3.5 - 8
19 yeas and older	3.9 - 6.8

Reference interval Attachments

Thyroid function reference intervals during pregnancy (Thyroid-function-reference-intervals-during-pregnancy.docx, 5.3 MB)

Uncertainty of measurement

10%

Minimum Volume

0.2 mL heparin plasma or serum.

Electronic Information

Registration Code

FT3

HL7 mapping code

$FT3

LOINC Code

14928-6

Laboratory Test Reference Guide