Changchun Wancheng Bio-Electron Co., Ltd.
Main products:Urine Analyzer,Urine Strips,Urine Strips 10T,PH Strips,Urine Strips VRS-1G
Contact Us
  • Contact Person : Ms. Zhang Yanru
  • Company Name : Changchun Wancheng Bio-Electron Co., Ltd.
  • Tel : 0086-431-84859899
  • Fax : 0086-431-85104366
  • Address : Jilin,ChangChun,No.388 Huoju Road High-tech Development Zone, ChangChun, Jilin Province, China
  • Country/Region : China
  • Zip : 130012

medical diagnostic test kit URS-4B

medical diagnostic test kit URS-4B
Product Detailed
Accurate test result Rapid result in 30 seconds Result stable for 60 seconds Long shelf life Sensitivity down to 1mmol/l

A urine test strip is a basic diagnostic instrument used to determine pathological changes in the urine in standard urinalysis. A standard urine test strip may comprise of up to 12 different chemical pads or reagents which react (change color) when immersed in, and then removed from, a urine sample. The test can be read between 60 and 120 seconds after dipping. Routine testing of the urine with multiparameter strips is the first step in the diagnosis of a wide range of diseases.

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) Easy to Use

2) Rapid Results

30 seconds to 2 minutes

3) High Quality Color Chart

Superior European-produced color charts provide consistent, dependable readings

4) Flexible

Available in up to 12 parameters

5) 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

6) Consistent Quality with 2 Year Shelf Life


Urine Reagent Strip (URS-4B)

Testing Items: Glucose pH Blood Protein



Dimension:  90(L)     5±0.2(W)   0.24-0.26(T)  (mm) 



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.


This test is based on double indicators (methyl red and bromothymol blue), which give a broad range of colors covering the entire urinary pH range. Colors range from orange through greenish-yellow and green to blue.

This test indicates the pH values within the range of 5 to 8.5.

Certain drugs, such as those used for hypertension and heart diseases (acetazolamides) may cause an alkaline urine. Excessive urine on the test strip may wash the acid buffer from the neighboring protein reagent onto the pH area and change the pH reading to an acid pH although the urine being tested may originally have been neutral or alkaline. An accurate reading may be influenced by slight variations of pigments in the urine.


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.


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 8.5) may give false negative results. The interpretation of results is also difficult in turbid urine specimens.  


Visual Reading technique:   


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. 



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.



Read the result by comparing the test fields with the color scale on the test pack after 30 to 60 seconds.


medical diagnostic test kit URS-4B

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