Description
Why It’s Done:
• To diagnose prostate cancer: The PSA IHC test is commonly used to diagnose prostate cancer by identifying the presence of PSA within tumor tissue. PSA is often highly expressed in prostate cancer cells, and detecting it can help confirm the cancerous nature of the cells.
• To distinguish between cancerous and benign conditions: Elevated blood PSA levels can be seen in conditions other than prostate cancer, such as BPH or prostatitis. The IHC PSA test helps differentiate between cancerous and benign tissue when a biopsy sample is taken.
• To confirm tumor origin: In cases where cancer may have spread (metastasized) to other parts of the body, the IHC PSA test can help confirm that the cancer originated in the prostate gland. This is especially useful in patients with metastatic prostate cancer to confirm the source of the cancerous cells.
• To assess tumor aggressiveness: Although not always used as a direct measure of aggressiveness, PSA expression in prostate cancer cells may give some insight into the tumor’s biological behavior and potential response to treatment.
• To monitor treatment and recurrence: After a diagnosis of prostate cancer, the PSA IHC test may be used in conjunction with other tests to monitor the effectiveness of treatment, such as surgery, chemotherapy, or radiation therapy, and to check for recurrence or metastasis.
Preparation:
• Fasting: Fasting is typically not required for the IHC – PSA test, as it is based on tissue samples rather than blood.
• Tissue sample: The PSA IHC test requires a biopsy sample, which may be taken from the prostate tissue. This is usually done via transrectal ultrasound-guided biopsy or surgical biopsy if necessary.
• Medications: Inform your healthcare provider about any medications you are taking, especially blood thinners, which may need to be stopped before a biopsy procedure.
• No special preparation: There are no dietary restrictions or lifestyle changes required before the test. However, it’s essential to follow the specific instructions provided by your healthcare provider regarding the biopsy procedure and any medications or supplements you may need to adjust before the biopsy.
