18 results
Medications that Can Cause False Positives on Drug Tests

Urine drug screens (UDSs) are simple to use,
Positives on Drug Tests ... Urine drug screens ... positives on drug tests ... (Benadryl) • Poppy ... medications #UDS #Utox
Summary of Agents Potentially Contributing to False Positives on Urine Drug Screens (UDS)
Marijuana Metabolites
 • dronabinol,
Positives on Urine ... levofloxacin, ofloxacin, poppy ... seeds, poppy oil ... naproxen and modern tests ... FalsePositives #Urine
Misinterpretation of Urine Toxicology Screen - False Positives and Negatives

Dr. Y. Jay Lin @JayLin3455

#Urine #Toxicology #UTox
Misinterpretation of Urine ... Toxicology Screen - False ... JayLin3455 #Urine ... #Toxicology #UTox ... #False #Positives
False Positive Urine Drug Screens
Amphetamines - Amantadine, brompheniramine. bupropion, chlorpromazine, desipramine, ephedrine, isometheptene, isoxsuprine, labetalol, phentermine,
False Positive Urine ... fluoroquinolones, poppy ... , quetiapine #False ... Positive #UDS #Urine
Urine Drug Screens - Common drugs that may cause false positive tests 

Amphetamines:
Bupropion, Labetalol, Methylphenidate, Phenylephrine,
Urine Drug Screens ... that may cause false ... positive tests ... Diphenhydramine #Urine
Amyloidosis - Workup and Diagnostic Algorithm
 • Serum Immunofixation and Serum Free Light Chains
 • Biopsy
and Diagnostic Algorithm ... Red Diagnostic tests ... • Serum and urine ... IFE and 24-h urine ... Workup #Diagnosis #Algorithm
Approach to Thrombotic Microangiopathy (TMA) - Differential Diagnosis and Management Algorithm

Suspected TMA: Unexplained thrombocytopenia + MAHA
and Management Algorithm ... Haptoglobin, LDH, Urine ... Direct antiglobulin test ... Haptoglobin • ↑ Urine ... Diagnosis #Management #Algorithm
Causes of Polyuria - Differential Diagnosis Algorithm
Polyuria - Urine Output > 3L/day, Increased Urine Volume (>2ml/min)
Osmotic
Differential Diagnosis Algorithm ... Polyuria - Urine ... Water Deprivation Test ... Water Deprivation Test ... Differential #Diagnosis #Algorithm
Cushing Syndrome Testing Algorithm
INDICATIONS FOR TESTING:
 • Suspected Cushing syndrome (central obesity, muscle weakness, refractory hypertension)
Testing:
Syndrome Testing Algorithm ... Cortisol, Free Urine ... dexamethasone suppression test ... Serum (or Cortisol Urine ... Syndrome #diagnosis #algorithm
Hyponatremia - Diagnostic Evaluation Algorithm

Step 1: Consider whether Posm may actually be normal or elevated
Step 2:
Diagnostic Evaluation Algorithm ... Check Uosm and/or Urine ... Consider additional tests ... Workup #Evaluation #Algorithm