Parathyroid Hormone (PTH) Lab Test

Parathyroid Hormone (PTH)
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Clinical Definition of Parathyroid Hormone (PTH)

PTH is a protein hormone which is secreted by the parathyroid gland and helps regulate the bodies calcium and phosphorus levels. The secretion of PTH is controlled by the levels of calcium in the blood. It acts to increase the concentration of calcium in the blood.

When do you expect results?

24 to 36 Hours

Why Get Tested?

A Parathyroid hormone (PTH) test ascertains the parathyroid hormone levels present in the blood. This test helps identification of hyperparathyroidism and is known to diagnose abnormal calcium levels.

It helps in observation and analysis to check the effectiveness of treatment of a parathyroid related condition in an individual. Very high or low PTH levels are known to be the cause of kidney and bone issues and cause changes in calcium and vitamin D levels.

Reason to take Parathyroid Hormone (PTH) Test

Symptoms to watch out for are:

  • Fatigue
  • Nausea
  • Thirst
  • Abdominal pain
  • Muscle cramps
  • Tingling fingers

Preparations Needed for Parathyroid Hormone (PTH) Test

Preparatory instructions before the test *:

  • Fasting samples have to be collected after a minimum 8 hour overnight fasting status.
  • Clear fluids like water is allowed during this period. Refrain from consumption of early morning beverages like tea, coffee and milk until specimen collection is completed.
  • You should not drink alcohol for 48 hours prior to the test.

Sample Required?

Specimen type: Serum (Blood Sample)

Specimen collection procedure: Venipuncture (Collection of blood from a vein, usually from the arm)

 

Understanding results of Parathyroid Hormone (PTH)

Reference RangeInterpretation
Child11.1 to 79.5 pg/ml(Normal)
Female11.1 to 79.5 pg/ml.(Normal)
Male11.1 to 79.5 pg/ml.(Normal)

‘*A Reference range is a set of values which helps the healthcare professional to interpret a medical test. It may vary with age, gender, and other factors. Reference ranges may also vary between labs, in value & units depending on instruments used and method of establishment of reference ranges’

References

  1. https://labtestsonline.org/tests/parathyroid-hormone-pth
  2. https://medlineplus.gov/ency/article/003690.htm