Definition and Etiology. Ascites is defined as the accumulation of fluid in the peritoneal cavity. It is a common clinical finding, with various extraperitoneal and peritoneal causes (Box 1), but it most often results from liver cirrhosis.
Tests for the detection of Bence-Jones Protein. Bradshaw Test. The urine specimen is treated with 1 or 2 drops of 33 per cent acetic acid to bring the pH down to 4.8 to 5.0, centrifuged clear, and diluted 1:1 with water. The diluted urine is layered carefully over concentrated HCl in a test tube.
In addition to this, many drug tests can also detect the agents that are created when the liver metabolizes opioids. These metabolites stay in a personâs system longer than the drug itself. In urine tests, traces of Percocet can generally be detected for 48 hours, starting 2 hours after the first dose. It can be found in the blood for just a day. The only long-term test is the hair test, which can detect oxycodone built up in the follicles for up to 30 days.