Free PSA (Blood)

Testing Laboratory

Auckland Te Toka Tumai | Auckland Hospital

Department

Chemical Pathology

Delphic Registration Code (Alpha Code)

FPSA

Test Code (Numeric Code)

3110

Laboratory Handling

Transport

Sample to be centrifuged, separated and frozen within 3 hours of Collection.

Registration

If samples arrive frozen please place straight into freezer 37. Samples need to remain frozen.

Separating

Serum should be separated and Frozen within 3 hours of Collection

Sample Stability

8 hours at 20-25°C, 5 days at 2-8 °C, 12 weeks at -20 °C

Synonyms

Prostate Specific Antigen (Free and Total)

Turnaround Time

24 hours

Specimen Type

• Plasma
• Serum

Specimen Requirements

Tube/Container Type:

Preferred

• Lithium Heparin PST- Gel (Light Green Cap)

Paediatric Specimen Requirements

Tube/Container Type:

Preferred

• Lithium Heparin PST- Gel (Light Green Cap)

Acceptable

• Heparin (Microtainer)
• Lithium Heparin - Non-gel (Green Cap)
• Lithium Heparin PST- Gel (Light Green Cap)
• Plain (Red Top)
• SST II (Gold Cap)

Aliquot Instructions

Sample Type

• Plasma

Transport to Lab

If overnight - Chilled (2 - 8 degrees Celsius)

Test Method

Principle: Sandwich type immunoassay with chemiluminescence detection

Reagents: Roche free PSA

Analyser: Cobas e801

Uncertainty of Measurement

Uncertainty of Measurement : 10% below level of 0.5 ug/L 6% above level of 2 ug/L

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 ( chemicalpathologist@adhb.govt.nz ) , 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 (09-3078995) and identify yourself as a doctor.

Test vetting policy

IMPORTANT EXTERNAL REFERRERS:

Sample to be centrifuged, separated and frozen within 3 hours of Collection.

Contact Information