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- Urinalysis Reagent Strips (1-11 Parameters, Uncut Sheets)(Guangdong)
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PrintProduct Name: Urinalysis Reagent Strips (1-11 Parameters, Uncut Sheets) 
Product Categories: Vitro Diagnostic Devices/Immunology and Hematology Devices Post Date: Nov 20,2015 Expiry Date: Dec 25,2014 Description: Payment Method: T/T in advance
NEUTRAL PACKING: annalee521
2.5-3.0USD/FCL
PRINCIPLE AND EXPECTED VALUES
Ascorbic acid: This test involves decolorization of
Tillmann's reagent. The presence of ascorbic acid causes the
color of the test field to change from blue-green to orange.
Glucose: This test is based on the enzymatic reaction that
occurs between glucose oxidase, peroxidase and chromogen.
Glucose if first oxidized to produce gluconic acid and
hydrogen peroxide in the presence of glucose oxidase. The
hydrogen peroxide reacts with potassium iodide chromogen in
the presence of peroxidase. The extent to which the
chromogen is oxidized determines the color which is
produced, ranging from green to brown. Low amounts of
glucose are normally excreted in urine. 3 Glucose
concentrations as low as 100 mg/dL, read at either 10 or 30
seconds, may be considered abnormal if results are
consistent. At 10 seconds, results should be
Interpreted qualitatively. For semi-quantitative results,
read at 30 seconds only.
Bilirubin: This test is based on azo-coupling reaction of
bilirubin with diazotized dichloroaniline in a strongly
acidic medium. Varying bilirubin levels will produce a
pinkish-tan color proportional to its concentration in
urine. In normal urine, no bilirubin is detectable by even
the most sensitive methods. Even trace amounts of bilirubin
require further investigation. Atypical results (colors
different from the negative or positive color blocks shown
on the color chart) may indicate that bilirubin-derived bile
pigments are present in the urine specimen, and are possibly
masking the bilirubin reaction.
Ketone: This test is based on ketones reacting with
nitroprusside and acetoacetic acid to produce a color change
ranging from light pink for negative results to a darker
pink or purple color for positive results. Ketones are
normally not present in urine. Detectable ketone levels may
occur in urine during physiological stress conditions such
as fasting, pregnancy and frequent strenuous exercise. 4-6
In starvation diets, or in other abnormal carbohydrate
metabolism situations, ketones appear in the urine in
excessively high concentration before serum ketones are
elevated. 7 Specific Gravity: This test is based on the
apparent pKa change of certain pretreated polyelectrolytes
in relation to ionic concentration. In the presence of an
indicator, colors range from deep blue-green in urine of low
ionic concentration to green and yellow-green in urine of
increasing ionic concentration. Randomly collected urine may
vary in specific gravity from 1.003-1.040. Twenty-four hour
urine from healthy adults with normal diets and fluid intake
will have a specific gravity of 1.016-1.022.8 In cases of
severe renal damage, the specific gravity is fixed at 1.010,
the value of the glomerular filtrate.
Blood: This test is based on the peroxidase-like activity of
hemoglobin which catalyzes the reaction of cumene-
hydroperoxide and 3, 3', 5, 5'-tetramethylbenzidine. The
resulting color ranges from orange to green to dark blue.
Any green spots or green color development on the reagent
area within 60 seconds is significant and the urine specimen
should be examined further. Blood is often, but not
invariably, found in the urine of menstruating females.
pH: This test is based on a double indicator system which
gives a broad range of colors covering the entire urinary pH
range. Colors range from orange to yellow and green to blue.
The expected range for normal urine specimens from newborns
is pH 5-7. The expected range for other normal urine
specimens is pH 4.5-8, with an average result of pH 6.
Protein: This reaction is based on the phenomenon known as
the "protein error" of pH indicators where an indicator that
is highly buffered will change color in the presence of
proteins (anions) as the indicator releases hydrogen ions to
the protein. At a constant pH, the development of any green
color is due to the presence of protein.
Company: Span Biotech Ltd. [ Guangdong ] Address: Unit 5, Building 3, Sunshine Aloha, Bantian Industrial Park, Banxuegang Road, Longgang, Shenzhen, Guangdong, China Contact: Anna Lee Tel: +86-755-89589611 Mobile: Fax: +86-755-89580096 Email: anna.lee@spanbio.com Disclaimer statement:The information and data included above have been realized by the enterprises and compiled by Department staff, and are subject to change without notice to you. The ChinameDevice.com makes no warranties or representations whatsoever regarding the facticity, accuracy and validity of such information and data. Our suggestion: In order to ensure your interest, we suggest registering as our gold suppliers.
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