BCLT 4-4 hCG Tests
Help!
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| hCG | pregnancy hormone, prod by placenta, detectable 1 week after implantation
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| enzyme immunoassay - new method aka | chromatographic immunoassay
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| qualitative test | urine
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| quantitative test | serum
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| CLIA waived only with | urine
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| chromatographic immunoassay principle | anti hCG antibodies >> attach color particles >> coat membrane strip >> complex (color change) or no complex forms
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| 1st morning urine best b/c | most concentrated
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| test asap or fridge >> | up to 24-48 hours
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| read results in | 5 min exactly, on time
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| who reports results | RN or doc, not phleb!
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| qualitative enzyme immunoassay >> followed up by | quantitative serum hCG
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| other conditions cause pos hCG test results | tumors: breast, ovarian, testicular; trophoblastic disease
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| pos hCG urine or serum test >> not to used to diagnose preg unless 1 and 2 | 1. other clinical findings support 2. other conditions have been ruled out
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