9 results
Laboratory Evaluation of Patients for Thyroid Disease 
Hyperthyroidism:
 • Graves disease - TSH low; free T4
high; in some cases ... increased radioactive iodine ... disease course #hypothyroid ... #hyperthyroid # ... differential #diagnosis
Hypercalcemia - Differential Diagnosis Algorithm
Elevated PTH (High or normal):
 • Primary Hyperparathyroidism
 • Familial Hypocalciuric Hypercalcemia
Low
Diagnosis Algorithm ... Elevated PTH (High or normal ... Hypercalcemia Low ... Bone Resorption: Hyperthyroid ... #causes #endocrinology
Hypokalemia - Differential Diagnosis Algorithm
Extra-renal Losses:
 • Normal Acid-Base: Low intake
 • Metabolic acidosis: Gl tract
Hypokalemia - Differential ... Diagnosis Algorithm ... Extra-renal Losses: • Normal ... #causes #potassium ... #low #nephrology
Hypokalemia Differential Diagnosis Algorithm
Hypertensive:
 • High Al, Low R - Primary aldosteronism
 • High Al, High
Hypokalemia Differential ... Diagnosis Algorithm ... #Hypokalemia #Differential ... #Diagnosis #Algorithm ... #nephrology #causes
Approach to Hypomagnesemia 

Fractional excretion of magnesium = (urine magnesium x serum creatinine)/ [0.7 (serum magnesium
Hypomagnesemia #algorithm ... #differential # ... diagnosis #causes ... #nephrology #magnesium ... #low
Hypokalemia Evaluation Algorithm

Before evaluating hypokalemia, life threatening complications such as arrhythmias and paralysis should be looked
Hypokalemia Evaluation Algorithm ... /Normal Blood Pressure ... #differential # ... potassium #nephrology ... #low
Causes of Non-Gap Metabolic Acidosis - Differential Diagnosis Algorithm
Normal Anion Gap (<14) (Loss of Bicarbonate) -
Causes of Non-Gap ... Normal Anion Gap ... Cell Problem - Low ... MetabolicAcidosis #NonGap #Nephrology ... #Causes
Physiologic Approach to Hypotonic Hyponatremia
The next time you have a case of hypotonic hyponatremia, give the
time you have a case ... remember than the normal ... volume-based algorithm ... #Hyponatremia #differential ... table #sodium #nephrology
Metabolic Alkalosis - Urinary Chloride Algorithm
Cl- responsive metabolic alkalosis
 • Kidney loss of Cl-
Urinary Chloride Algorithm ... /low blood pressure ... the indicated causes ... Chloride #urine #Algorithm ... #nephrology #differential