by Claire Bostic 4 years ago
252
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Elevated iPTH
Ddx: Primary hyperparathryoidism
Mid-upper Normal iPTH
Ddx: FFH
Low iPTH
Measure PTHrP
Normal
Measure 1, 25 (OH)2 vitamin D
Low/Normal
Measure 25 (OH) vitamin D
Ddx: multiple myeloma, medication reaction
Ddx: Vitamin D intoxication
Likely ddx: lymphoma, granulomatous disease
Elevated
Hypercalcemia of malignancy: Squamous cell carcinomas, Adenocarcinoma of the lung, pancreas, kidney, Breast cancer, Thyroid cancer, Leukemia, Plasma cell myeloma, Hodgkin disease