urinalysis


Also found in: Dictionary, Thesaurus, Medical, Financial, Acronyms, Wikipedia.

urinalysis

(yo͝or'ənăl`ĭsĭs), clinical examination of urineurine,
clear, amber-colored fluid formed by the kidneys that carries metabolic wastes out of the body (see urinary system). As the blood circulates it collects excretory products from the tissues and these substances are separated from the blood by the kidneys and eliminated
..... Click the link for more information.
 for the purpose of medical diagnosis. Urine is initially examined for such characteristics as color, odor, and specific gravity. It is routinely tested for acidity, as indicated by its pH reading, and screened for sugar, ketone bodies, proteins, and bile content. Benedict's solution, for example, may be used to test for simple sugars, a high level of which is a possible indicator of diabetes mellitus. Ketone bodies, e.g., acetone and acetoacetic acid, in the urine indicate the substitution of fats for sugar in the energy cycle and are another indication of diabetes mellitus. Abnormal levels of protein may be signs of kidney disease. A high concentration of bile in the urine is a sign of liver malfunction or blockage of the bile duct. Urine is examined microscopically to determine blood count. High levels of erythrocytes, or red blood cells, and leukocytes, or white blood cells, may be a result of bleeding and infection, respectively, in the urinary tract. Casts, crystals, and other substances, whose origins may be ascertained by determining their chemical structures, can be observed microscopically. Additional studies are performed when specific malfunctions are suspected. Clearance tests, for instance, will determine the ability of the kidneys to remove waste substances from the blood plasma per unit of time. The urine of patients with melanotic cancer will often contain melanin, a skin pigment. A diagnosis of drug addiction may be confirmed by the presence of specific chemical substances in the urine. Urinalysis is also employed to test for pregnancy. Pregnant women secrete high levels of gonadotrophic, or ovary-regulating, hormones from the placenta. A reagent containing gonadotrophic hormones is mixed with a sample of urine from the patient, and gonadotrophic antigens are added to it. Failure of the antigens to clump, or agglutinate, is positive evidence of pregnancy.

urinalysis

[‚yu̇r·ə′nal·ə·səs]
(pathology)
Analysis of the urine, involving chemical, physical, and microscopic tests.
References in periodicals archive ?
Comparison of marijuana urinalysis results to self-reported 30-day marijuana use
Consequently, the drug detection cutoff levels for urinalysis can be exceeded by even the ingestion of small quantities of morphine present in poppy seeds.
Using these data as a guide, the projected savings to Steelcase will be $105,000 a year as a result of switching from urinalysis to hair analysis for pre-employment screening.
One also might posit that the lack of agreement or difference in some of the urinalysis parameter measurements could have to do with the MSCC being collected first with urine that has been sitting in the bladder versus the straight catheterization performed after the bladder was emptied for the MSCC.
Trucking companies are required to do urinalysis only when administering pre-employment drug screening.
The presence of a positive urinalysis with more than 50,000 CFUs/mL of a uropathogen is required for a diagnosis of UTI.
Advancements in quality control and quality management practices could also benefit the urinalysis lab.
Objective: To determine the role of urinalysis in patients undergoing CT KUB (kidney, ureter, bladder) for acute renal pain.
The present study has been designed to evaluate proportional morbidity rate(PMR) along with comparative evaluation study between different diagnostic tools (viz., urinalysis, radiography, hyperkalemia, clinical signs and ultrasonography for Pandora Box Syndrome (PBS).A total of PMR among PBS cases was estimated to be 8.7%.
At each monthly visit, urine culture, urinalysis, and symptoms of a CA-UTI were assessed.
In the past year, the Department of the Navy (DON) has experienced five personally identifiable information (PII) breaches involving the urinalysis drug testing program.
share the results of a study of the impact of urine concentration on the optimal threshold in the new era of automated urinalysis. Centrifugation of urine specimens has long been standard laboratory practice, presumably performed to concentrate sediment and facilitate the detection of cellular elements and bacteria.