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|42150:PROSTATE SPECIFIC ANTIGEN (PSA), DIAGNOSTIC|
|Methodology:||Chemiluminescence Immunoassay (CLIA)|
|Released:||Same day as tested|
|Specimen Collection Details|
|Collection:||One 7.5 mL serum separator tube (SST). Also acceptable: One 5 ml red top tube. Specimen should be collected before such prostatic manipulations as DRE, prostatic massage, TRUS, or prostatic biopsy.|
|Handling:||Allow to clot, centrifuge and separate serum from cells within 3 hours. Refrigerate at 2-8o C. Freeze at -20o C if not assayed within 48 hours. Allow no more than two freeze/thaw cycles.
To assure accurate matching for historical graph, patient’s Social Security Number is requested in addition to date of birth.
|Stability:||48 hours refrigerated or 5 months frozen at -20o C.|
|Standard Volume:||1 mL serum.|
|Minimum Volume:||0.5 mL serum.|
|Transport:||Refrigerated, or frozen on dry ice.|
|Comments:||This is a Hybritech 3rd Generation (Ultrasensitive) equimolar Total PSA with a clinical sensitivity of 0.008 ng/mL.|
|Rejection Criteria:||Plasma; specimen frozen and thawed more than twice; refrigerated specimen received in laboratory more than 48 hours after collection.|