Urine RBC Test Strip

Specifications Accurate test result

Rapid result in 30 seconds

Result stable for 60 seconds

Long shelf life

Sensitivity down to 1mmol/l

Wancheng urinalysis strips are very resistant to interference from ascorbic acid (vitamin C). Some strips on the market are prone to vitamin C interference and give falsely-lower or false-negative results. The tests that are most affected are blood, glucose, bilirubin and nitrite.   1) Rapid Results   30 seconds to 2 minutes 2) High Quality      Color Chart Superior European-produced color charts provide consistent, dependable readings 3) Flexible             Available in up to 12 parameters 4) Cost Effective   25, 50, or 100 strips per bottle, with performance better than or equal to the current market leader at a much lower price         Urine RBC Test Strip (URS-4B)       OEM service could be offered         Test items:  Glucose pH Blood Protein    Dimension :  90(L)     5±0.2(W)   0.24-0.26(T)  (mm)         Glucose This test is based on a sequential enzyme reaction. First, glucose oxidase catalyzes the formation of gluconic acid and hydrogen peroxide from the oxidation of glucose. A second enzyme, peroxidase, catalyzes the reaction of hydrogen peroxide with potassium iodide chromogen to oxidize the chromogen to colors ranging from blue through greenish-brown, and brown to dark-brown.     Reactivity of the test decreases as the specific gravity and/or pH of urine increases, and may also vary with temperature. Ascorbic acid (more than 50 mg/dl) and ketone bodies (more than 40 mg/dl) may cause a false negative result for a specimen containing a small amount of glucose (100 mg/dl). However, the combinations of such ketone levels and low glucose levels are metabolically improbable.     Blood   This test is based on the pseudoperoxidase activity of hemoglobin which catalyzes the reaction of 3,3'5,5'-tetramethylbenzidine and buffered organic peroxide, 2,5-dimethylhexane-2,5-dihydroperoxide. The resulting color ranges from, greenish-yellow through bluish-green to dark blue.   A false positive test result can sometimes occur when bacteria are present in the urine. Ascorbic acid or protein may reduce the reactivity of the blood test. Strong oxidizing substances such as hypochlorites may produce a false positive result. Urine from menstruating females often, but not always, yield positive results.   This test is slightly more sensitive to free hemoglobin and myoglobin than to intact erythrocytes. The test is generally capable of detecting 0.015-mg/dl free hemoglobin or 5 to 10 intact red blood cells per ml of urine. The sensitivity may he reduced in urine with high specific gravity and ascorbic acid content. The appearance of green spots on the reagent test area indicates the presence of intact erythrocytes in the urine. Protein This test is based on the color change of the indicator tetrabromophenol blue. A positive reaction is indicated by a color change from yellow through green and then to greenish-blue. The minimum sensitivity of this test is 10 mg/dl of protein in urine. Highly buffered alkaline urines (pH 9) may give false negative results. The interpretation of results is also difficult in turbid urine specimens.         Visual Reading technique:                                                                Step 1: Remove a test strip, taking care not to touch the reaction fields.                    Immediately close the container again.             This protects the remaining test strips from humidity and guarantees strip integrity up to the expiry date indicated.        Step 2: Dip the test strip for about 1 second into the fresh urine specimen. Wipe off any excess urine on the rim of the vessel and blot the edge of the test strip on tissue paper.     Step 3: Read the result by comparing the test fields with the color scale on the test pack after 30 to 60 seconds.                                 Uncut Sheet 1-12 parameters are offered