Only available with Chemical Pathologist approval.
Department
Endocrinology Lab
Delphic Registration Code
T4
Synonyms
T4 Total
TT4
Turnaround Time
14 days
Test Code
8866
Specimen Type
Serum
Plasma
Specimen Requirements
Tube/Container Type:
Preferred
Serum (Red Cap)
Preferred if West Coast
SST II (Gold Cap)
Acceptable
SST II (Gold Cap)
Lithium Heparin - Non-gel (Green Cap)
Lithium Heparin - Gel (Light Green Cap)
Preferred Sample Volume (ml)
5.0
No of Samples Required
1
Paediatric Specimen Requirements
Tube/Container Type:
Preferred
Serum (Red Cap)
Acceptable
SST II (Gold Cap)
Lithium Heparin - Non-gel (Green Cap)
Lithium Heparin - Gel (Light Green Cap)
Preferred Sample Volume (ml)
1.0
Aliquot Instructions
Sample Type
Serum
Plasma
Minimum Volume (ml)
1.0
Transport to Lab
Frozen
Additional Referral/Aliquot Information
Minimum 1.0 ml serum, ideally 1.5 ml serum. This volume allows all total thyroid funtion tests to be performed. Fridge 4C.
Transport to CHL separated serum frozen
Reference Intervals
78 – 157 nmol/L (manufacturers data)
Test Method
Beckman-Coulter Access Analyser - CMIA
Non-Funded Test Cost
$30.7 (Exclusive of GST)
Billing Code
8866
EDTA not acceptable.
Automated method with different reference range introduced 22 August 2014.
