Medical Health Encyclopedia

Blood Tests for Stone Factors. Blood tests may help determine levels of blood urea nitrogen, creatinine, calcium, phosphate, and uric acid for patients with known or suspected calcium oxalate stones. These tests are often scheduled about six weeks after the attack, particularly with recurrent stones, in order to measure these substances when the stone has been passed and the patient has been stabilized.

Parathyroid Tests. Tests to detect parathyroid hormone levels are administered if the doctor suspects hyperparathyroidism based on other signs and symptoms.

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Tests for Infection. A test result that shows a high white blood cell count might indicate infection, but such results could be misleading, since white cells could also increase in response to the extreme physical stress of a kidney stone attack.