Experiencing bone discomfort, calcium imbalances, or kidney stones and want assessment of parathyroid function and calcium regulation for optimal bone health?
Concerned about your calcium levels or bone strength? Parathyroid hormone keeps calcium, phosphate, and vitamin D in balance so your bones, muscles, and nerves work the way they should. This test may help check if your parathyroid glands are doing their job and can be useful if you’re experiencing low bone density, kidney stones, or unexplained muscle weakness.
You will be emailed a referral to take to your local collection centre. If you ever have any questions, we're here to help.
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Bloody Good is a single portal for ordering, tracking, and reviewing on-demand health testing. Get started with three simple steps:
1
Book your test
Choose the testing that suits your goals. After ordering, you will receive your referral by email.
2
Collect your samples
Have your sample collected at one of our 4000+ partner collection centres.
3
View your results
View your lab results and receive a personalised review from the secure Bloody Good platform.
Your parathyroid hormone (PTH) test measures a crucial hormone that acts like your body's calcium thermostat, constantly fine-tuning calcium levels to keep your bones strong, muscles working properly, and nerves firing correctly. Four tiny parathyroid glands behind your thyroid produce this hormone, which orchestrates a delicate dance between your bones, kidneys, and intestines to maintain just the right amount of calcium in your bloodstream—not too much, not too little.
When PTH levels are off, it often signals problems with your parathyroid glands, calcium balance, or bone health, which can manifest as symptoms like unexplained fatigue, muscle weakness, bone pain, kidney stones, or even mood changes. This test is particularly valuable if you're experiencing these symptoms, have abnormal calcium levels, deal with recurring kidney stones, or have been diagnosed with osteoporosis, as it helps your healthcare provider pinpoint whether your calcium regulation system is functioning properly and determine the best path forward for treatment.
Reviewed by Dr. Vu Tran Bloody Good’s Chief Medical Officer
You may benefit from the Parathyroid Hormone (PTH) Blood Test
Essential for individuals with calcium abnormalities, bone disorders, parathyroid symptoms, or anyone needing comprehensive calcium metabolism and bone health assessment.
Bone pain or deep aching
Fractures with minimal trauma
Muscle weakness in arms or legs
Feeling tired all the time
Feeling sad or down most of the time
Difficulty concentrating on tasks
How to prepare
No special preparation required. Inform healthcare provider of all medications, calcium supplements, and vitamin D that might affect PTH levels and calcium metabolism.
Understanding results
Results show PTH levels compared to normal ranges and must be interpreted with calcium levels. Abnormal results may indicate parathyroid disorders or calcium metabolism problems requiring further evaluation.
After the test
Address abnormal PTH through comprehensive endocrine evaluation, appropriate treatments for parathyroid or calcium disorders, dietary modifications, and regular monitoring. Work with endocrinologists as needed.
Frequently Asked Questions
PTH is produced by parathyroid glands and regulates calcium levels by controlling calcium absorption, bone calcium release, and kidney calcium retention.
High PTH may indicate hyperparathyroidism, vitamin D deficiency, kidney disease, or calcium malabsorption, requiring evaluation to determine the underlying cause.
Low PTH may indicate hypoparathyroidism, magnesium deficiency, or certain genetic conditions affecting parathyroid gland function.
PTH and calcium have an inverse relationship; when calcium is low, PTH increases to raise calcium levels, and when calcium is high, PTH decreases.
Causes include parathyroid gland tumors, genetic conditions, autoimmune diseases, surgery affecting parathyroid glands, and certain medications.
Treatment depends on the specific disorder and may include surgery, medications, calcium and vitamin D supplementation, and dietary modifications.
You will be emailed a referral to take to your local collection centre. If you ever have any questions, we're here to help.
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Bloody Good is a single portal for ordering, tracking, and reviewing on-demand health testing.
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Frequently Asked Questions
Find answers to common questions about our products and services.
Most collection centres accept walk-ins. Some may require a booking - check details when you click on your chosen location.
If your test needs fasting, we’ll include that in your instructions after you order. Fasting usually means no food for 8–12 hours, but water is fine.
Just your pathology referral form (we email it to you)
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