General Information About the Test
Test Process and Preparation
A persistently high PTH level leads to an excessive accumulation of calcium in the blood. This excess calcium travels to the kidneys, causing kidney stones to form, and because it is drawn from the bones, it leads to severe bone loss (osteoporosis) and muscle weakness.
Vitamin D deficiency reduces calcium absorption from the intestines. When calcium in the blood drops, the parathyroid gland starts producing more PTH (Parathyroid Hormone) to compensate for this. For this reason, the Vitamin D level is also mandatorily checked in every patient with elevated PTH.
Because hormone levels can change throughout the day and after eating, the most accurate result is obtained by drawing blood from the arm in the morning hours (usually between 08:00 - 10:00) after a full 8-10 hour fast.
The information on this page is for informational purposes only. The results of medical tests must be evaluated by specialist physicians.
