LabInformationLab tests, explained

Parathyroid Hormone (PTH) Test in California

Parathyroid Hormone (PTH) Test is a laboratory test you can order directly. A parathyroid hormone (PTH) test measures the amount of PTH in your blood. PTH helps control calcium levels. It is ordered when calcium is abnormal or to check parathyroid function. This page covers the parathyroid hormone (pth) test for people in California, in Pacific, from what it measures to how to arrange a draw.

Sample type
blood
Category
Hormone
Turnaround
1-3 business days
Price
$158
Referral
Not required

A parathyroid hormone (PTH) test measures the amount of PTH in your blood. PTH helps control calcium levels. It is ordered when calcium is abnormal or to check parathyroid function.

What it measures

  • Parathyroid hormone (PTH) — The main hormone that regulates calcium in your blood.
  • Calcium — Often tested alongside PTH to see how the two relate.
  • Phosphate — Another mineral that PTH helps balance.
  • Vitamin D — Works with PTH to manage calcium absorption.

Who it is for

Doctors order this test when a routine calcium test is high or low, or when they suspect a parathyroid problem.

Preparation

No fasting is usually required. Tell your doctor about all medications and supplements, as some can affect PTH levels.

Results and what they mean

Results are reported as a number with a reference range. Your clinician interprets them along with calcium and other tests. This is general information, not medical advice.

Requesting the Parathyroid Hormone (PTH) Test in California

Order online, choose a certified collection site in California, and review results through a secure portal. No referral is required, and orders are processed confidentially. Access across Pacific is uneven, so confirming a site ahead of time is worthwhile.

Frequently asked questions

Do I need to fast for a PTH test?

Usually no. But follow any instructions from your doctor.

What can affect my PTH level?

Calcium and vitamin D levels, kidney function, and some medicines can affect PTH.

How long do results take?

Typically 1-3 business days, but times can vary by lab.

Is this test painful?

It is a standard blood draw. You may feel a quick pinch.

Parathyroid Hormone (PTH) Test by city in California

All testing in California →   Full Parathyroid Hormone (PTH) Test guide →