PTH (Intact Parathyroid Hormone)

Also referred as

Parathormone

intact PTH

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A PTH (Intact Parathyroid Hormone) test assesses the level of parathyroid hormone (PTH) that plays a crucial role in regulating calcium and phosphorus levels in the body. This test helps evaluate parathyroid gland function and primarily diagnose conditions related to calcium imbalance.

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Blood

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Preparations

Overnight fasting required for 8 to 12 hours

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Understanding PTH (Intact Parathyroid Hormone)

Parathyroid hormone (PTH) is produced by the parathyroid glands, four small glands located near the thyroid gland in the neck. PTH plays an important role in regulating the levels of calcium and phosphorus in the body. It helps maintain calcium balance by influencing its absorption from the intestines, release from bones, and reabsorption by the kidneys. PTH ensures that the concentration of calcium in the blood stays within a normal range as it is essential for various physiological functions, including bone health, nerve transmission, and muscle contraction.

A PTH (Intact Parathyroid Hormone) test helps in assessing the function of the parathyroid gland and identifying conditions associated with imbalances in calcium and, to some extent, phosphorus. Understanding PTH levels can provide valuable insights into bone health, kidney function, and disorders related to mineral metabolism. Regular monitoring of PTH levels is essential for individuals with conditions affecting calcium homeostasis and those at risk of bone disorders or kidney problems. Additionally, this test can be done when individuals exhibit symptoms related to calcium and phosphorus imbalance, such as persistent bone pain, impaired kidney function, long-term digestive problems, pain or discomfort in joints, muscle weakness, etc. Also, it can be done when your routine blood tests show abnormal calcium or phosphorus levels. These symptoms may indicate disorders such as hypoparathyroidism or hyperparathyroidism, where parathyroid glands are either underactive or overactive, respectively.

Overnight fasting for at least 8-12 hours is needed before undertaking a PTH (Intact Parathyroid Hormone) test. However, drinking water before the test is acceptable. PTH is released in a rhythmic pattern, with increased levels during the night; therefore, you may need to take the test at a certain time of day. Also, tell your doctor about all the medications or supplements, including calcium, that you are taking before undertaking this test, as these may interfere with the test results.

Lab test results may vary across different laboratories. Abnormal test results require an expert interpretation; therefore, never try to self-medicate at home based solely on these results, and always consult a doctor for a proper understanding of the test results. The insights from a PTH (Intact Parathyroid Hormone) test help the doctor tailor a treatment plan to address specific problems like hypoparathyroidism or hyperparathyroidism and target to restore calcium balance in the body.

What does PTH (Intact Parathyroid Hormone) measure?

A PTH (Intact Parathyroid Hormone) test measures the levels of parathyroid hormone (PTH) in the blood. PTH regulates calcium and phosphorus levels in the body. PTH levels are regulated by a feedback loop with calcium in the blood. Low calcium stimulates PTH release, and high calcium inhibits it. Problems like tumors or damage to the parathyroid glands can disrupt this balance, leading to abnormal PTH levels.

Monitoring of PTH levels is important in managing disorders affecting bone and mineral metabolism, and a PTH (Intact Parathyroid Hormone) test helps assess the function of parathyroid glands and diagnose conditions related to calcium and phosphorus imbalance.

Packages containing PTH (Intact Parathyroid Hormone)

Parathyroid Profile

Contains 4 tests

Get reports within 18-24 hrs

₹2399

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Serum Calcium

Also known as Calcium blood test, S. Calcium, Serum Ca

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KFT with Electrolytes (Kidney Function Test with Electrolytes)

Also known as RFT with Electrolytes (Renal Function Test with Electrolytes)

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CBC (Complete Blood Count)

Also known as Full blood examination, Full blood cell count, Complete blood picture, FBC, CBP, FBE, TC, DC, TLC, Platelet count, CBC with Differential, CBC + Differential

Report in 7 hrs

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~~₹389~~

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PPBS (Postprandial Blood Sugar)

Also known as Postprandial plasma glucose concentration, Sugar PP, 2-hour postprandial, Glucose Postprandial (PP)

Report in 7 hrs

₹99

~~₹179~~

45% off

Magnesium

Also known as Serum magnesium test

Report in 18-24 hrs

₹519

Phosphorus, Serum

Also known as Phosphorus blood test, Phosphate test

Report in 7 hrs

₹169

~~₹209~~

19% off

Urine R/M (Urine Routine & Microscopy)

Also known as Microscopic urine analysis, Microscopic examination of urine, Urinalysis, Urine routine, Urine R/E, CUE (Complete Urine Examination), Urine Routine & Microscopy Extended, Urine Complete Analysis, Urine Routine Examination, Urine Examination, Routine

Report in 7 hrs

₹129

Vitamin D (25-Hydroxy)

Also known as Calcidiol, Vit D (25-OH)

Report in 7 hrs

₹549

~~₹1709~~

68% off

Test Information is reviewed by: Dr. Swati Gupta (Anand), MBBS, MD Lab Medicine and written by Dr. Lipika Khurana, BDS, PGDHHM . The test details are for information purpose only. Consult a doctor before taking any test. Last updated on: 24th Oct 2026

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PTH (Intact Parathyroid Hormone) test price for other cities

Price in	New Delhi	Rs. 1599
Price in	Mumbai	Rs. 1709
Price in	Kolkata	Rs. 1439
Price in	Bangalore	Rs. 1959
Price in	Pune	Rs. 1429

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FAQs related to PTH (Intact Parathyroid Hormone)

Why is a PTH (Intact Parathyroid Hormone) test done?

A PTH (Intact Parathyroid Hormone) test is done to assess parathyroid gland function and detect conditions related to calcium imbalance.

Is fasting required before taking a PTH (Intact Parathyroid Hormone) test?

Yes, overnight fasting of 8 to 12 hours is needed before undertaking a PTH (Intact Parathyroid Hormone) test. However, drinking water is acceptable.

Can calcium supplements interfere with a PTH (Intact Parathyroid Hormone) test results?

Yes, calcium supplements can affect parathyroid hormone levels; therefore, it is important to inform your doctor about any supplements you are taking before going for a PTH (Intact Parathyroid Hormone) test.

What are the most common causes of low parathyroid hormone levels?

The most common causes of low parathyroid hormone levels include reduced activity of parathyroid glands, increased hormone secretion from the thyroid gland (hyperthyroidism), deficiency of magnesium, and hypercalcemia unrelated to the parathyroid gland.

What are the most common causes of high parathyroid hormone levels?

The most common causes of high parathyroid hormone levels include parathyroid gland tumors, improper response of the kidneys to PTH, deficiency of Vitamin D, injury to the spinal cord, hypocalcemia unrelated to parathyroid gland.

How does vitamin D affect PTH levels?

Vitamin D helps the body absorb calcium from food. If your body does not get enough vitamin D, PTH levels can rise, leading to hyperparathyroidism.

What is an intraoperative PTH test?

An Intraoperative PTH test assesses the intact parathyroid hormone levels during surgery to ensure complete removal of abnormal parathyroid gland tissues.

What additional tests can be prescribed by your doctor if the results of a PTH (Intact Parathyroid Hormone) test are abnormal?

Additional tests that may be prescribed in case of abnormal parathyroid hormone test results are blood calcium test, electrolyte panel test, and kidney function tests.

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