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What tests diagnose primary hyperparathyroidism?

Tests that may be helpful in making the diagnosis of primary hyperparathyroidism include the blood phosphate level, the vitamin D level, urine calcium levels (a urine test of calcium collected over a 24-hour period), and the blood creatinine level (a measure of kidney function). The 24 hour urine calcium level will help determine if the individual has familial hypocalciuric hypercalcemia (a benign condition not requiring surgery). Vitamin D levels should be checked because low vitamin D levels may be causing a problem called secondary hyperparathyroidism and vitamin D levels need to be cautiously replaced before further work up is done. Patients with elevated calcium and/or parathyroid hormone levels should also have their bone density tested. This is done by a special x-ray test called a DEXA-scan. 

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Important: This content reflects information from various individuals and organizations and may offer alternative or opposing points of view. It should not be used for medical advice, diagnosis or treatment. As always, you should consult with your healthcare provider about your specific health needs.