Prostate Specific Antigen (PSA)
A coagulase secreted in semen and synthsised in the prostate. PLEASE NOTE: TEST CAN ONLY BE ADDED TO A SAMPLE WITHIN 8 HOURS OF COLLECTION
|Tube||01 (SE) - Serum Gel|
|Additional Information||PSA is not considered suitable for screening the general population for disease but men over 50 are able to request the test after discussion with their GP.
PSA measurement should be followed up by a DRE. PSA increases with clinical disease stage: PSA >50 ug/L is indicative of metastatic disease with >100 ug/L suggesting bony metastases. PSA is also useful for monitoring treatment of prostatic carcinoma. It is useful to measure PSA post prostatectomy with elevated concentrations being indicative of residual disease. It is also useful for predicting tumour recurrence months before any clinical signs. False negative PSA results are seen in 9% cancer patients.
The minimum repeat interval for PSA is one month.
PSA can be increased following DRE, UTI etc. For more information see: http://www.pathology.leedsth.nhs.uk/pathology/Portals/0/PDFs/BP-2013-05.pdf.
|Turn Around||A&E: N/A
Day Case: N/A
In-Patient: 24 Hours
Out-Patient: 24 Hours
GP: 24 Hours
|Send to||Blood Sciences Cross Site|
|Contact||For further details please contact Leeds Pathology customer services: email@example.com.|
|Collection Con||Only measured in males.
Minimum volume - 250µl serum / plasma
Instructions for Lab Staff: Standard lab processing- No special requirements
|Ref. Range Notes||Blood Sciences reference ranges are available through the useful information and links page: