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Testing Laboratory

Waitematā | Northshore Hospital

Department

Chemical Pathology

Delphic Registration Code (Alpha Code)

FT3

Test Code (Numeric Code)

7313

Laboratory Handling

Sample Stability

48 hours

Associated Tests

Synonyms

Free Triiodothyronine
T3

Turnaround Time

1 day

Specimen Type

  • Plasma
  • Serum

Specimen Requirements

Tube/Container Type:

Preferred
  • Lithium Heparin - Non-gel (Green Cap)
Preferred if Waitākere
  • SST II (Gold Cap)
Acceptable
  • Plain (Red Top)
  • SST II (Gold Cap)
Preferred Sample Volume (ml)

4

Minimum Sample Volume (ml)

1

Paediatric Specimen Requirements

Tube/Container Type:

Preferred
  • Heparin (Microtainer)
Acceptable
  • Plain(Microtainer)
  • SST(Microtainer)
Minimum Sample Volume (ml)

0.4

Last updated: 06/05/2026