Free T3

Pathology category

Biochemistry

Code

FT3

Referral code

Request form

Test information

Assessment of Thyroid Function

Guidelines

Pre-analytical

Reference range

Male (pmol/L)            Female (pmol/L)
0 – 1Y                       4.3 – 6.9                            4.3 – 6.9
1Y – 15Y                    4.0 – 6.2                            4.0 – 6.2
15Y – 19Y                  3.8 – 5.7                            3.5 – 5.3
Adult                         3.8 – 6.0                           3.8 – 6.0

Source: Beckman Coulter

Tube type

Tube type info

Adults: 5ml Serum SST (gold top)

Paediatrics: 0.5ml lithium/heparin (orange top)

Special requirements

Minimum volume

Adults: 0.5 ml

Paediatrics: 0.3 ml

Assay frequency

Run daily at local laboratory

TAT Inpatient (urgent)

TAT Inpatient

3 days

TAT GP/Outpatient

3 days

Referral lab

Local, Clinical Biochemistry