Thyroxine (Total T4)

Diagnostic Use

Only available with Chemical Pathologist approval.

Department

Endocrinology Lab

Delphic Registration Code

T4

Laboratory Handling

Test Adds

Sample is stable for 24 hrs at 2- 8 C, or Frozen at -20 C

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

Reference Intervals

78 – 157 nmol/L (manufacturers data)

Test Method

Beckman-Coulter Access Analyser - CMIA

Non-Funded Test Cost

$32.09 (Exclusive of GST)

Billing Code

8866

Contact Information

Enquiry Form