Prostate-Specific Antigen (PSA), Free and Total (MALES ONLY) - (QUEST DIAGNOSTICS)
Description: In this profile, free PSA is performed regardless of the concentration of total PSA. The interpretive guidelines provided for percent free PSA are based on a population of men with normal digital rectal exam (DRE) and total PSA between 4.0 and 10.0 ng/mL. Elevated levels of Prostate Specific Antigen (PSA) have been associated with benign and malignant prostatic disorders. Studies indicate that in men 50 years or older measurement of PSA is a useful addition to the digital rectal exam in the early detection of prostate cancer. In addition, PSA decreases to undetectable levels following complete resection of the tumor and may rise again with recurrent disease or persist with residual disease. Thus, PSA levels may be of assistance in the management of prostate cancer patients.
Significant deviations from the normal range may require further evaluation by your physician.
Please Note: This test is for male clients only, due to ordering restrictions on certain tests, the PSA test will not be included on the requisition and will not be performed when ordered by females.
Includes: Total PSA, Free PSA, % Free PSA (calculated)
Patient Instructions: For accurate test results, no ejaculation during the 24 hours preceding the test.
PSA, Total with % Free (% free provided when total PSA is between 4 and 10) (Male Clients ONLY) - (LABCORP)
Description: Please Note: Due to ordering restrictions on certain tests, this test can ONLY be performed on Male clients. Prostate-Specific Antigen (PSA), Total with % Free, which measures blood levels of certain proteins that the prostate releases into the blood, may detect cancer of the prostate gland. A significant deviation from the normal range may require further evaluation by your physician.
Includes: Total Prostate-Specific Antigen (PSA); free PSA is ONLY provided when total PSA is between 4 and 10.
Patient Instructions: PSA sampling should not be performed for at least 6 weeks after prostatic biopsy. For accurate test results, no ejaculation during the 24 hours preceding the test. This test may exhibit interference when sample is collected from a person who is consuming a supplement with a high dose of biotin (also termed as vitamin B7 or B8, vitamin H or coenzyme R). It is recommended to stop biotin consumption at least 72 hours prior to the collection of specimen.