68 results
Cushing Syndrome Testing Algorithm
INDICATIONS FOR TESTING:
 • Suspected Cushing syndrome (central obesity, muscle weakness, refractory hypertension)
Testing:
Cushing Syndrome ... Testing Algorithm ... Cortisol, Free Urine ... Serum (or Cortisol Urine ... #diagnosis #algorithm
Causes of Proteinuria - Differential Diagnosis Algorithm
Persistent Proteinuria >150mg/d protein present on repeat testing including overnight
Differential Diagnosis Algorithm ... present on repeat testing ... including overnight testing ... • Fanconi's syndrome ... Differential #Diagnosis #Algorithm
Nephritic vs Nephrotic Syndrome

Step 1: If the patient has hematuria and/or proteinuria, think about nephrotic/nephritic syndromes.
Step
Nephritic vs Nephrotic Syndrome ... nephrotic/nephritic syndromes ... dysmorphic RBCs in urine ... Nephritic #Nephrotic #Syndrome ... #Comparison #Algorithm
Algorithm for Differentiating Gitelman syndrome from Bartter syndrome
 • Urine Chloride
 • Urine Ca/Cr ratio

Dr. Krithika
Algorithm for Differentiating ... Gitelman syndrome ... • Urine Chloride ... • Urine Ca/Cr ... #Bartter #Algorithm
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 ... DrugScreening #UDS #Testing
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 ... FalsePositive #Testing
Hypophosphatemia - Measurement of urine phosphate excretion - Differential Diagnosis Algorithm
 • GI loss
 • Redistribution
Measurement of urine ... Differential Diagnosis Algorithm ... Primary Renal PO4 wasting ... Hypophosphatemia #urine ... Differential #Diagnosis #Algorithm
Volume Based Approach to Hyponatremia
Hypovolemic, Serum uric acid >4
 • Urine Na <20: Extra-renal losses
 •
uric acid >4 • Urine ... Cerebral salt wasting ... Cirrhosis, Nephrotic syndrome ... • Urine Na > 30 ... #Hyponatremia #algorithm
Hematuria Workup and Diagnosis Algorithm
 • Confirm hematuria → Urinalysis >3 RBCs/HPF, exclude mimics, repeat testing
and Diagnosis Algorithm ... mimics, repeat testing ... WBCs, or urine ... → Urine culture ... Hematuria #Diagnosis #Algorithm
Primary Metabolic Alkalosis - Differential Diagnosis Algorithm
Volume Depleted - 2° hyperaldosteronism
 • Low Urine Cl-: Vomiting,
Differential Diagnosis Algorithm ... hyperaldosteronism • Low Urine ... (late) • High Urine ... , Gitelman Syndrome ... Differential #Diagnosis #Algorithm