Her RBC count was in the normal range and the occult blood test was negative in routine test, while the RBC morphology test indicated the presence of non-homogeneous hematuria. Conclusions Therefore, we analyzed the causes of false-negative result on the urine chemical analyzer and the automatic...
“Four of 10 men who would have a negative biopsy will have a low risk MPS2 result and can confidently skip a biopsy," Wei said. "If a man has had a biopsy before, the test works even better," he added. That scenario might occur if a patient's PSA test numbers begin to rise ov...
I took an at home urine dipstick test and showed negative for UTI, but the symptoms still linger. I went to the doc yesterday to have a test and their in office test showed blood, but no bacteria. They are culturing it and ill know in a day or two. But upon comming home i ...
Objective: To use urine analyzer occult blood test and microscope analysis of red blood cell(RBC) for 200 urine samples.The sensitivity of the urine analyzer occult blood test is 91.18%,the false negative rate is 8.82%,and the false positive rate is 9.85%.Comparing the test results of two ...
It has, however, a high rate of false-positive results (due to the presence of blood, drugs, or a highly concentrated or alkaline urine sample) and false-negative results (due to low specific gravity, high acidity, or nonalbumin proteinuria) when compared with a 24-hour urine protein ...
Rothera test reaction, excretion of HB and pH were determined in urine samples. The concentrations of fat, protein and urea were determined on milk samples. The for subclinical ketosis were considered as: HB > 1.0, > 1.2 and >1.4 mmol/L. Negative energetic balance (NEB) presentation was ...
The urine antigen test had a sensitivity of 88% and specificity of 98%. The positive predictive value was 79% and the negative predictive value 99%. Blood culture was positive in only five neonates (29%). The annual incidence of GBS sepsis was 4.0 per 1000 and of blood culture positive ...
If you think you might be pregnant despite a negative test result, don't hesitate to visit your doctor as soon as possible. Your OB-GYN will perform a complete gynecological examination, ultrasound assessment, and perform another test — the one that detects hCG in your blood. The blood hCG...
Urine test could become early detection device AIDS: Researchers at the Clinical Reference Laboratory in Kansas have detected HIV antibodies in the urine of 24 low-risk people who tested negative for HIV in blood tests. These people are presumed to have been exposed to the virus, but... N ...
Test value Standard values Test principle Influencing and confounding factors Erythrocytes <5/μl Hemoglobin peroxidase activity False negative due to Vitamin C. False-positive due to myoglobinuria, strong oxidizing detergents, menstrual blood contamination, marked leukocyturia, high physical activity. Leuc...