Prostatic Acid Phosphatase
Prostatic Acid Phosphatase (PAP) is an enzyme produced primarily by prostate epithelial cells. Historically, it was one of the earliest blood markers used in the assessment of prostate cancer before the widespread adoption of Prostate-Specific Antigen (PSA) testing. Although PSA has largely replaced PAP in routine screening, Prostatic Acid Phosphatase retains clinical relevance in certain specialist scenarios, particularly in monitoring advanced prostate malignancy or evaluating specific disease progression patterns. PAP is released into the bloodstream when prostate tissue is disrupted, inflamed, or affected by malignant change. Elevated levels may therefore reflect pathological processes involving the prostate gland.
- Price: £53
- Code: APP
- TAT: 8 Working Days
- Sample Type: Blood
Clinical Significance
Before the introduction of PSA testing, PAP was widely used as a tumour marker for prostate cancer. While PSA remains more sensitive for early detection, PAP may still provide additional information in advanced or metastatic disease, particularly in cases where bone involvement is suspected. Elevated PAP levels have historically been associated with prostate cancer that has extended beyond the gland. In addition to malignancy, increased levels may occasionally be seen in benign prostatic hyperplasia (BPH), prostatitis, or following prostate manipulation. Because PAP is not prostate-specific in the same way as PSA, interpretation must always consider the broader clinical picture. In selected cases, clinicians may use PAP alongside PSA and imaging studies to monitor treatment response or disease progression, particularly in more complex oncological scenarios.
Who Might Benefit From This Test?
This test may be appropriate for individuals undergoing evaluation for prostate disorders, particularly when more detailed assessment is required beyond standard PSA testing. It may also be requested in patients with known prostate cancer as part of ongoing monitoring. Men experiencing persistent urinary symptoms, unexplained pelvic discomfort, or those with a history of prostate malignancy may benefit from comprehensive biomarker evaluation where clinically indicated.
Sample Collection
A blood sample is collected by a trained healthcare professional in a clinical setting. The procedure is straightforward and typically completed within minutes. Samples are processed in accredited laboratories to ensure accurate and reliable measurement of Prostatic Acid Phosphatase levels.
Understanding Your Results
Results are interpreted alongside PSA levels, digital rectal examination findings, imaging results, and overall clinical context. Mild elevations may not necessarily indicate malignancy and can occur in benign conditions. Significant or rising levels, however, may warrant further investigation. Because prostate biomarker interpretation is complex, results are reviewed carefully to determine whether additional testing, monitoring, or specialist referral is appropriate.
FAQs
When will I receive my results?
Results are usually available within the stated turnaround time.
Should I discuss my results with a doctor?
Yes, results should always be reviewed with a qualified healthcare professional.
Why Choose Marylebone Diagnostic Centre?
Marylebone Diagnostic Centre offers comprehensive prostate and men’s health testing within a discreet and professional environment. Our experienced clinical team ensures meticulous sample handling and collaboration with accredited partner laboratories. With a turnaround time of 8 days, this test supports detailed prostate assessment and informed clinical decision-making.
Book Now
Book the Prostatic Acid Phosphatase (APP) test today to support comprehensive prostate health evaluation.
