The PTH test is ordered to evaluate the function of the parathyroid glands, small glands located in the thyroid that have the function of producing parathyroid hormone (PTH). PTH is produced to prevent hypocalcemia, that is, low levels of calcium in the blood, which can lead to seizures and heart failure in more severe cases and if left untreated. Learn more about hypocalcemia and what it can cause.
This test does not require fasting and is performed with a small blood sample, the PTH dose is mainly requested to diagnose hiccups or hyperparathyroidism, but is also required in the follow-up of patients with chronic renal impairment, and is usually requested with the blood calcium dose.In people without altering the production of parathormony, normal blood values should be between 12 and 65 pg/mL, which may vary by laboratory.
- While preparation is not necessary before the examination.
- It is important to inform the doctor of the use of any medications.
- Especially sedatives.
- Such as Propofol.
- For example.
- As they may decrease the concentration of PTH.
- Thus interfering with the interpretation of the physician of the In addition.
- It is recommended that the collection be carried out in a reliable laboratory or hospital with qualified professionals.
- As hemolysis.
- Often caused by collection errors.
- Can interfere with the test result.
The test does not require any preparation, however it is recommended to take the sample in the morning, as its concentration may vary during the day.The extracted blood is sent to the lab, where it is treated and placed on a device where the tests are performed.The result is usually published approximately 24 hours after collection.
Parathyroid hormone is produced in response to low blood calcium levels; acts on bones, kidneys and intestines to increase the availability of calcium in the blood and prevent hypocalcaemia; PTH is also responsible for increased absorption of vitamin D by the gut.
PTH activity is regulated by another hormone, calcitonin, which begins to occur when calcium levels are too high, decreasing PTH production and stimulating calcium excretion in the urine, for example, understands how it is done and what the calcitonin test is for.
Your doctor interprets the test result at the same time as the calcium dose, as the production of parathormonymone depends on the concentration of calcium in your blood.
The PTH test is requested by the doctor in case of suspected hiccups or hyperparathyroidism, before and after performing surgeries involving the thyroid or in case of symptoms of hiccups or hypercalcaemia, such as fatigue and abdominal pain, for example.the main causes of excess calcium in the blood and how to treat it.