Burr cells usually imply uremia, but are seen in many conditions, including mild hemolysis in hypomagnesemia and hypophosphatemia, hemolytic anemia in long-distance runners, and pyruvate kinase deficiency.
Hyperparathyroidism, hypothyroidism, hemochromatosis, hypophosphatemia, hypomagnesemia and renal osteodystrophy are often also associated with chondrocalcinosis.
