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PSA; Free

Alternative Names:

Prostate Specific Antigen; Free
PSA Ratio

Laboratory:

Clinical Biochemistry

Test Code:

PSAF

Specimen Types:

Blood

Container Types:

SST

Adults Volume or Mass:

5 mL

Minimum/Paediatric Volume or Mass:

1 mL

Collection & Request Instructions:

If total PSA level is borderline, Free PSA / Total PSA ratio assists differentiation of prostate cancer from benign prostatic hypertrophy. Prostate cancer has increased serum-complexed PSA compared to free PSA.

Transport Instructions between Sites and/or Laboratories:

Room Temperature

Assay Frequency:

Weekly

MBS Rebatable:

Yes

MBS Item No.:

66655

Billing Information:

Also MBS Item Nos 66656 and 66659

Additional Notes:

Test is performed on Abbott Alinity

Reference Ranges:

Normal: > 28%
Equivocal: 9—27%
Abnormal: < 8%