Urinalysis - The Carter Center
Urinalysis - The Carter Center
Urinalysis - The Carter Center
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peroxidase activity) catalyzes the oxidation of orthotolidine by the<br />
peroxide. <strong>The</strong> oxidized orthotolidine is blue.<br />
Procedure:<br />
1. Follow the manufacturers directions and precautions.<br />
2. Dip the test end of strip into a well-mixed specimen of urine and<br />
remove immediately.<br />
3. After 30 seconds compare the test area with the color chart<br />
provided.<br />
4. Report as indicated on the color chart.<br />
Composition of the strip<br />
78<br />
<strong>The</strong> test area is impregnated with orthotolidine, cumene hydroperoxide<br />
and citrate buffer.<br />
4.8 Determination of Urinary Calcium<br />
Introduction<br />
<strong>The</strong> bulk of calcium ions (Ca++) discharged by body is excreted in the<br />
stool. However, there is small quantity of calcium that is normally<br />
excreted urine. But it may increase depending up on the quantity of<br />
dietary calcium ingested. <strong>The</strong> 24 hour test is most often ordered to<br />
determine the function of the parathyroid gland, which maintains a<br />
balance between calcium and phosphorous by means of parathyroid<br />
hormone. Hyperparathyrpidism is a generalized disorder of calcium,<br />
phosphate and bone that results from increased secretion of parathyroid<br />
hormones and an increased excretion of urinary calcium. In<br />
hypoparathyrodism the urinary calcium is decreased.<br />
Interfering Factors<br />
1. False positive<br />
- High sodium and magnesium intake.
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