Parathyroid Hormone (Blood)

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Testing Laboratory

Auckland Te Toka Tumai | Auckland Hospital

Department

Chemical Pathology

Delphic Registration Code (Alpha Code)

PARA

Test Code (Numeric Code)

3670

Laboratory Handling

Phlebotomy

Intraoperative PTH assays must be arranged with the Section Head of Automation, LabPlus (ext 22118, or contact via LabLink ext 22000) at least one day before the operation:
- The turnaround time is approximately 35 minutes from receipt of the sample.
- Hand deliver samples to ensure no transport delays.

Test Adds Requirement

Intraoperative PTH Assays: Lablink: Note requirements under Specimen Collection in regards to arranging this test request.
Please refer calls related to these samples to the Automation Section Leader or a Technical Specialist so that the correct tracking form can be filled out.

Sample Stability

Stability of PTH in plain, EDTA or heparin tubes (less than 10% change):
- Unseparated: Serum - centrifuged immediately due to instability. Plasma - up to 6h at room temperature.
- Separated: Serum sample stability: 8 hr at 15-25°C, 2 days at 2-8°C, 6 months at -20°C.

Associated Tests

Synonyms

PTH, Parathormone, PTH-STAT

Turnaround Time

3 hours

Specimen Type

  • Plasma
  • Serum

Specimen Requirements

Tube/Container Type:

Preferred
  • Lithium Heparin PST- Gel (Light Green Cap)
Acceptable
  • EDTA (Lavender Cap)
  • Lithium Heparin - Non-gel (Green Cap)
  • Plain (Red Top)
  • SST II (Gold Cap)
Preferred Sample Volume (ml)

5

Minimum Sample Volume (ml)

3.5

No of Samples Required

1

Paediatric Specimen Requirements

Tube/Container Type:

Preferred
  • EDTA (Microtainer)
Acceptable
  • Heparin (Microtainer)
Preferred Sample Volume (ml)

0.5

Pre-testing Requirements

Intraoperative PTH assays must be arranged with the Section Head of Automation, LabPlus (ext 22118, or contact via LabLink ext 22000) at least one day before the operation.
- The turnaround time is approximately 35 minutes from receipt of the sample.
- Hand deliver samples to ensure no transport delays.

Additional Specimen Information

0.5 mL Paediatric Microtainer EDTA Blood (Preferred)
0.5 mL Paediatric Microtainer PST Blood (Preferred)

Last updated: 26/08/2026