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Preservative cerebrospinal fluid cerebrospinal

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Unformatted text preview: t and second tube of CSF are The frequently contaminated with blood frequently And may not be suitable for analysis Factors to consider Factors When should a test be used What physiologic and pathologic mechanisms What underlie or explain the test procedure and the results underlie What do the test results mean in relation to the What patient’s over-all clinical problem patient’s What knowledge of laboratory technology does the What physician need to know in order to ensure his proper use and interpretation of the test use If there is potential danger in the test → is the If expected benefit greater than the danger expected Drug interference Drug Medication may alter the results of chemical Medication tests through tests Pharmacological Physical Chemical mechanisms The pharmacological effect may be Primary The drug directly effects a substance → The (xanthine oxidase inhibitor) lowers uric acid levels (xanthine Secondary Estrogens cause increases in ceruloplasmins and Estrogens thyroxine binding proteins → increase in copper and thyroxine levels thyroxine A drug or its metabolite may also interfere drug with the determination of a particular constituent constituent An iodine containing drug can interfere w...
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