Pseudohyperphosphatemia in multiple myeloma: A commonly misdiagnosed phenomenon

Sixty-eight-year-old African American male was consulted to the nephrology clinic for elevated creatinine and microalbuminuria. The patient was asymptomatic and the lab results were detected during routine PCP follow up visits. He had a past medical history of hypertension, congestive heart failure, diabetes mellitus and papillary thyroid carcinoma status post total thyroidectomy. His relevant home medications included carvedilol, furosemide, amlodipine, gemfibrozil and rosuvastatin.