1435 results
Causes of Hematuria - Differential Diagnosis Algorithm
Red blood cells on urine microscopy. Must exclude false positives
- Differential Diagnosis ... Algorithm Red ... blood cells on urine ... Must exclude false ... #Algorithm #Causes
Medications that Can Cause False Positives on Drug Tests

Urine drug screens (UDSs) are simple to use,
that Can Cause False ... Drug Tests Urine ... Amphetamine false ... Cannabinoid false ... #differential #diagnosis
Summary of Agents Potentially Contributing to False Positives on Urine Drug Screens (UDS)
Marijuana Metabolites
 • dronabinol,
Contributing to False ... Positives on Urine ... (High Rate of False ... FalsePositives #Urine ... Testing #Laboratory #diagnosis
Hypo-osmolar Hypotonic HypoNatremia Algorithm (Serum Na+ < 135 meq/L, serum Osm < 275 mosm/kg)
Assess Volume Status,
Hypotonic HypoNatremia Algorithm ... Status, Check Urine ... Na, Urine Osm ... #Hyponatremia #Algorithm ... #Diagnosis #Nephrology
Hypophosphatemia - Measurement of urine phosphate excretion - Differential Diagnosis Algorithm
 • GI loss
 • Redistribution
Measurement of urine ... - Differential Diagnosis ... Algorithm • GI ... Hypophosphatemia #urine ... #Algorithm
True Hyponatremia Differential Algorithm

Instead (or in addition) of volume status examination, check urine sodium and serum
Hyponatremia Differential Algorithm ... examination, check urine ... uric acid: - Urine ... #Differential #Algorithm ... #Diagnosis #Nephrology
Polyuria - Differential Diagnosis Algorithm
Urine Output > 3L /day
Water Diuresis (Urine Osm <100 mOsm/kg)
 • Primary
- Differential Diagnosis ... Algorithm Urine ... Water Diuresis (Urine ... #Differential #Diagnosis ... #Algorithm #causes
Hyponatremia - Differential Diagnosis and Evaluation Algorithm
In addition to edema and urine concentration, always consider urine
- Differential Diagnosis ... and Evaluation Algorithm ... addition to edema and urine ... always consider urine ... #Evaluation #Algorithm
Urine Drug Screens - Common drugs that may cause false positive tests 

Amphetamines:
Bupropion, Labetalol, Methylphenidate, Phenylephrine,
Urine Drug Screens ... that may cause false ... Diphenhydramine #Urine ... Laboratory #Toxicology #Diagnosis
False Positive Urine Drug Screens
Amphetamines - Amantadine, brompheniramine. bupropion, chlorpromazine, desipramine, ephedrine, isometheptene, isoxsuprine, labetalol, phentermine,
False Positive Urine ... , quetiapine #False ... Positive #UDS #Urine ... Drug #Screening #diagnosis