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19 Cards in this Set
- Front
- Back
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F(+): High concentration of urine |
Specific Gravity |
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F(-): Highly alkaline urine |
Specific Gravity |
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F(+): Strong oxidizing agents, bacterial peroxidase, menstrual contamination |
Blood |
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F(+): PBG, indican, procaine, p-aminosalicylic acid, sulfonamides, methyldopa, chlorpromazine, pigmented urine |
Urobilinogen |
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F(-): Proteins other than albumin, high salt concentration, microalbuminuria |
Protein |
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F(-): Improperly preserved specimens |
Ketones |
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F(-): Ascorbic acid, ketones, high SG, low temperatures, improperly preserved specimens |
Glucose |
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F(+): Old specimen, highly pigmented urine |
Nitrite |
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F(+): Highly pigmented urine, indican, phenazopyridine, metabolites of lodine |
Bilirubin |
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F(+): Strong oxidizing agents, formalin, highly pigmented urine, nitrofurantoin |
Leukocyte esterase |
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Runover from adjacent pads, Old specimens |
pH |
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F(+): Phthalein dyes, highly pigmented red urine, levodopa, medications containing SH group |
Ketones |
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F(+): Highly buffered alkaline urine, pigmented specimens, chlorhexidine, phenazophyridine, QAC’s, antiseptics, loss of buffer, high SG |
Protein |
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F(-): Specimen exposure to light, ascorbic acid >25mg/dL, high concentration of nitrite |
Bilirubin |
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F(-): Old specimens, formalin, high concentration of nitrite |
Urobilinogen |
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F(-): Protein, glucose, oxalic acid, ascorbic acid, gentamicin, cephalosporins, tetracylines |
Leukocyte Esterase |
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F(+): Oxidizing agents, detergents |
Glucose |
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F(-): High SG, crenated cells, formalin, captopril, nitrite, ascorbic acid, unmixed specimen |
Blood |
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F(-): Nonreductase-containing bacteria, lack of urinary nitrate, insufficient contact time between bacteria and nitrate, bacteria converting nitrite to nitrogen, antibiotics, ascorbic acid, high SG |
Nitrite |
