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Urinalysis - The Carter Center

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Diastix is incorporated in the glucose test area in various other multiplereagent<br />

strips produced by the manufacturer, Ames Co. these other<br />

tests include: Combistix, Ketodiastix, Labstix, Multistix, Uristix and the<br />

like.<br />

Procedure<br />

Follow the directions supplied with the reagent strip.<br />

1. Dip the reagent area of the strip briefly into the specimen.<br />

2. Compare the test area with the colour chart after 10 seconds to<br />

see whether the reaction is positive or negative for glucose.<br />

3. Compare the test area with the color chart at 30 seconds, for a<br />

semiquantitative result, and report the results as indicated on the<br />

chart.<br />

Sensitivity<br />

Diastix reagent strip detects as little as 100mg of glucose in 100 ml of<br />

urine.<br />

4.2 Determination of Ketone Bodies<br />

Introduction<br />

Ketone bodies, also called Ketones, are a group of three related<br />

substances such as, acetone, acetoacetate (acetoacetic acid or diacetic<br />

acid), and β -hydroxybutyrate (β -hydroxybutyric acid).<br />

Ketone bodies are normal products of fat metabolism.<strong>The</strong>y are normally<br />

not detectable in the blood or urine. In normal metabolism, fat is broken<br />

down in the tissues to glycerol and fatty acids. <strong>The</strong> free fatty acids are<br />

transported by the plasma albumin to the liver where they are broken<br />

down to acetyl coenzyme A (acetyl Co-A) molecules. <strong>The</strong>se condense<br />

with oxaloacetate in the Krebs cycle to produce citrate. <strong>The</strong> citrate is<br />

then oxidized to produce heat and energy. Whenever there is<br />

inadequate carbohydrate in the diet or a defect in carbohydrate<br />

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