Abnormal urinalysis results may point to a disease or illness.For example, a urinary tract infection can make urine look cloudy instead of clear.

Le PSA est également présent dans le sang en petite quantité, ce qui permet son dosage. All rights reserved. Gene Test May Help Eliminate Unnecessary Biopsies, Spot Aggressive Cancers in Men With High PSA LevelsAug.
Our website services, content, and products are for informational purposes only.


Prostate-specific antigen, or PSA, is a protein produced by normal, as well as malignant, cells of the prostate gland. Sensitive means it’s unlikely that the test would miss a case of cancer. A painless urine test could soon help doctors tell when a high prostate specific antigen (PSA) level means a dangerous cancer or when it’s a … For this test, a blood sample is sent to a laboratory for analysis. “We wanted to see if our urine markers could be useful in that situation.”The test uses strands of artificially created oligonucleotides, the building blocks of DNA and RNA, which are built to match the code of the fused gene, which is called TMPRSS2:ERG.To increase the accuracy of the test, researchers also looked for another gene, called prostate cancer antigen 3, or PCA3, which is also found in urine.The two tests together appeared to generate both sensitive and specific results. If it’s low, the man will need treatment later, or might not need treatment at all, explained Doctors have challenges when it comes to classifying which tumors will become more aggressive.This makes it more difficult to determine appropriate treatments.To detect prostate cancer, doctors commonly use the prostate-specific antigen (PSA) blood test or a physical test known as a digital rectal examination, a magnetic resonance imaging (MRI) scan, or a biopsy.The PSA test is the standard assessment, but about 75 percent of men with an elevated PSA level wind up having biopsies but no cancer, the researchers noted in their study.The other 15 percent of men who don’t have elevated PSA have prostate cancer — and 15 percent of those cancers are aggressive, the researchers added.An ideal PUR test candidate would be any man who shows symptoms of prostate cancer such as a raised PSA, or any man who’s on active surveillance for prostate cancer, Brewer told Healthline.Brewer said there are other urine tests used to diagnose prostate cancer, but none are widespread in clinical use.“Our current test matches the best performance of other tests in picking up those patients that have clinically significant disease,” he said.These men need surgery, radiotherapy, or hormone therapy. When a man is put into the active surveillance category, it can require invasive follow up.Active surveillance can involve taking a PSA blood test every three months and then having an MRI or biopsy every two years.The status is also a constant reminder that the person has cancer but his future is uncertain.About 50 percent of men who partake in active surveillance wind up treating the cancer, even if it doesn’t require treatment, researchers noted.“We currently lack the ability to tell which men diagnosed with prostate cancer will need radical treatment and which men will not,” “It’s clear that there is a considerable need for additional, more accurate tests,” Connell said.“The PUR test means we could predict whether or not men with prostate cancer already on active surveillance would require treatment.” said “It would require validation on an independent cohort of patients before it could be used clinically,” Dr. Klein said.The research team plans to confirm the findings in another dataset and perform a multi-center trial before bringing the test to the market, Brewer said.“If validated, this discovery could have a huge effect on those men who might have prostate cancer,” Brewer added. This urine test looks for a fusion of genes that is present in 50% of prostate-specific antigen tested men with prostate cancer. Unusual uri… If this score is high, the man will need treatment sooner. The PUR test measures the expression of approximately 30 genes in urine and gauges the rate at which certain functional units in the cell are being produced.From there, the tests create a score. Stephen Jones, MD, chairman of the department of regional Urology at the Cleveland Clinic, in Ohio.WebMD does not provide medical advice, diagnosis or treatment.