Testing Laboratory
Auckland Te Toka Tumai | Auckland HospitalDepartment
Chemical Pathology
Delphic Registration Code (Alpha Code)
WARF
Test Code (Numeric Code)
3069
Laboratory Handling
Transport
Frozen
Separating
Centrifuge and separate as soon as possible after collection
Laboratory
LabPLUS High Performance Liquid Chromatography
Sample Stability
Referigerated: 2 days
Frozen at -20°C: several months
Synonyms
Warfarin
Turnaround Time
3 days
Turnaround Time: Between 1 day and 3 days
This test may be vetted by the laboratory. Please include relevant clinical information on the request form to ensure appropriate tests are approved. See the 'Clinical Information' section below for more information on the indications for testing.
Specimen Type
- Plasma
Specimen Requirements
Tube/Container Type:
Preferred
- EDTA (Lavender Cap)
Preferred Sample Volume (ml)
4
Paediatric Specimen Requirements
Tube/Container Type:
Preferred
- EDTA (Microtainer)
Pre-testing Requirements
This test may be vetted by a pathologist.
The clinical information for the test must be clearly written on the request form. If clinical information is not provided, or does not provide sufficient justification for the test, the test may be declined.
Declined tests:
If a test is declined, the specimen will be held for a reasonable period (usually 3 weeks but dependant on the stability of the sample). Medical practitioners seeking approval for a declined test should email the on-call Chemical Pathologist , giving the patient's name and NHI number and the clinical justification for the test. If unable to email, call the on-call Chemical Pathologist via Lablink and identify yourself as a doctor.
Additional Specimen Information
Tubes containing gel (SST and PST) are NOT acceptable
Last updated: 22/09/2026