Take a look at some initial diagnostic testing below.
Urinalysis/microscopy, urine electrolytes
Urine sediment
Basic labs 
Kidney Ultrasound
Let’s take a break – what are the top three diagnoses on your differential?
Multiple myeloma
Hypovolemia
Hepatorenal syndrome
Post-infectious glomerulonephritis
Membranoproliferative glomerulonephritis
Obstructive uropathy
Acute interstitial nephritis
Hypertensive nephropathy
Sarcoidosis
Small cell lung cancer
Milk-alkali syndrome
Hodgkin lymphoma
Click here to move on!
Case 22 Index
Case 22 Introduction
Case 22 Physical Exam