free PSA

free PSA

Urology PSA in the circulation that is unbound to its usual carrier molecules, the protease inhibitors; free PSA is used to distinguish prostate CA from BPH, etc; free PSA levels are measured in Pts with a total PSA level between 4 and 10 ng/mL and nonsuspicious digital rectal examinations; ↑ free PSA indicates a ↓ risk of CA. See Prostate-specific antigen.
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9--borderline at worst, and something the insurance company would have let slide--but his free PSA was lower than 10, which warranted a biopsy.
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Abbott offers cancer immunoassays on its ARCHITECT analyzer including AFP, CA 125, CA 15-3, CA 19-9, CEA, free PSA, HE-4, and total PSA, as well as other products.
The combination of free PSA and total PSA was approved for cancer detection by the FDA in 1998 and is useful in cases with moderately elevated total PSA (4.
Men aged over 50 years were encouraged to attend the event to have a free PSA test and talk to urologists and nurses from UHCW NHS Trust about the disease.
Free PSA is a newer evaluation for prostate health.
In their study with men between the ages of 40 and 69, Gray and colleagues reported significantly lower free PSA (fPSA) and fPSA% values in smokers than in non-smokers, but total PSA (tPSA) did not show such a difference.
These materials consisted of lyophilized 1-[micro]g preparations of 100% free PSA (96/668), and 90% [[alpha].
Medicare in Australia will not reimburse claims for a free PSA if the total PSA result is not accompanied by the age-related normal range.
These include a recent study published in The Journal of Urology, which confirmed that the phi score is a better predictor of prostate cancer risk than PSA or percent free PSA alone in men 50 years of age and older with a PSA range of 2-10 ng/mL who had a digital rectal exam with no suspicious findings.
Veltri and colleagues measured serum total PSA, free PSA and pro-PSA, performed a digital rectal examination semiannually and conducted a surveillance biopsy examination each year.