Parathyroid Hormone Test | Lab Test in Riverside, CA
Order Parathyroid Hormone (PTH) Test | Lab Test in Riverside, CA
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Order Parathyroid Hormone (PTH) Test | Lab TestThe parathyroid hormone (PTH) test measures the amount of parathyroid hormone in the blood. PTH is produced by the parathyroid glands, four small glands located near the thyroid in the neck. This hormone is central to calcium regulation: it raises blood calcium when levels fall and influences phosphorus handling in the kidneys and bones. Because PTH and calcium are tightly linked, the test is usually interpreted alongside a calcium measurement rather than in isolation.
About Parathyroid Hormone (PTH) Test | Lab Test in Riverside
PTH testing helps clinicians evaluate parathyroid function and calcium balance.
Parathyroid hormone acts on bone, kidneys, and the intestine to maintain stable blood calcium. When calcium drops, PTH secretion rises; when calcium is high, PTH normally falls. A PTH result read without a simultaneous calcium value can be misleading, since the relationship between the two is the diagnostic signal.
The test is commonly used to investigate abnormal calcium levels, suspected hyperparathyroidism or hypoparathyroidism, and some cases of kidney disease or bone loss. Primary hyperparathyroidism typically shows a high or inappropriately normal PTH with high calcium, while hypoparathyroidism shows low PTH with low calcium. Secondary causes, such as kidney failure or vitamin D deficiency, can also raise PTH.
Results are reported in picograms per milliliter (pg/mL) or the equivalent unit used by the performing laboratory, and each laboratory supplies its own reference interval. Because PTH is released in pulses and can vary with time of day, sample handling and collection conditions matter. Clinicians interpret the number in context, often with calcium, phosphorus, vitamin D, and kidney function results.
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Frequently Asked Questions
Where can I arrange Parathyroid Hormone (PTH) Test | Lab Test in Riverside, CA?
Several accredited laboratories across Riverside, CA process Parathyroid Hormone (PTH) Test | Lab Test, according to LabTestOrder.
What determines the price of Parathyroid Hormone (PTH) Test | Lab Test in Riverside?
Price for Parathyroid Hormone (PTH) Test | Lab Test depends on the panel and the laboratory, so LabTestOrder recommends confirming a written estimate first.
How long do Parathyroid Hormone (PTH) Test | Lab Test results take in Riverside?
LabTestOrder documents a 1-3 business days turnaround for most Parathyroid Hormone (PTH) Test | Lab Test results in Riverside.
Do I need a referral for Parathyroid Hormone (PTH) Test | Lab Test in Riverside?
According to LabTestOrder, Riverside laboratories usually accept direct requests, but a few insurers expect a referral.
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