urease test

u·re·ase test

1. a test for urea based on the conversion of urea into ammonium carbonate by the enzyme urease;
2. a test for the production of urease, used for identification of Cryptococci and Helicobacter pylori.
References in periodicals archive ?
pylori infection are rapid urease test, serology (IgG ELISA), histopathology, 13C-urea breath test (UBT) and polymerase chain reaction (PCR).
Two endoscopic biopsies were taken from the lesion of stomach, one of these biopsies was processed as soon as possible for rapid urease test and the second one preserved in neutral buffered formalin for routine Hematoxylin and eosin stain and immunohistochemistry.
pylori by biopsy basedmethods, such as culture, histology, or a rapid urease test. Studies evaluating the performance of these diagnostic methods have shown that antral biopsy specimens had excellent sensitivity and specificity (over 90%), in the nonulcer dyspepsia or peptic ulcer patients.1 Antral or angularis biopsy has also been reported to be more sensitive in the detection of H.
pylori infection as a positive histology, serology, stool antigen, urea breath test, or rapid urease test. They excluded studies of fewer than 50 isolates, studies that reported resistance only as a percentage with no denominator, studies that failed to specify time frames or clustered data over more than 3 years, and data reported in guidelines, conference presentations, or letters without formal publication.
pylori infection of the gastric mucosa specimens, rapid urease test has played and still plays a pivotal role in the Endoscopy Unit.
neoformans is the rapid urease test, performed within 15 to 35 minutes.
Bacterial culture, Rapid urease test, PCR assay, and histology are the invasive methods applied to diagnose the H.
pylori was assessed one month after the completion of treatment by performing a rapid urease test on gastric biopsy samples.
Biochemical analyses including pH, temperature, lactose fermentation test (LAC), indole test (IND), methyl red test (MR), Voges-Proskauer test (VP), urease test (URE), catalase test (CAT), aerobic and anaerobic test (Ae/An) were measured.
pylori infection by histopathology and rapid urease test. [6] Patients on antiulcer drugs in preceding 4 weeks except antacids, on nonsteroidal antiinflammatory drugs, and corticosteroids, with coexisting gastric carcinoma, pyloric stenosis, active upper gastrointestinal (GI) hemorrhage, cirrhosis, renal disorders or any other severe organ disease, chronic alcoholics, hypersensitivity to study drugs, pregnant, or lactating mothers were excluded from the study.
Testing to diagnose Hp infection includes the rapid urease test, histological analysis using microscopy, and cultures, which reflect Hp infection at the biopsy site, and the urea breath test, serum Hp-IgG antibody (HpAb) titers, and stool antigen tests, which reflect Hp infection in the entire stomach [9, 10].
All patients underwent upper endoscopy, with simultaneous test by Urease test to screen for H.