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7 Cards in this Set
- Front
- Back
why do a throat culture
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-determine presence of GAS
-beta hemolysis on blood agar (can see through it) |
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alpha hemolysis
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-green zone around colonies
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beta hemolysis
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-clear zone around the colonies
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gamma hemolysis
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-neither a green or clear zone
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why do a urine culture
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-confirm suspicion of UTI
-lower UTI: E. coli most common, klebsiella, proteus -upper UTI: e. coli |
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urine cultures
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-clean catch
-catheter specimen -suprapubic specimen -test within 30 min or refrigerate up to 24 hrs or use transport media |
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urine cultures-colony counting
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-1.0 microliter (.001 ml) calibrated loop
-# colonies x dilution factor (1000) = CFU/ml -> 100,000 CFU = UTI (clean catch) any CFU = UTI in suprapubic specimen |