Description

Vitamin D deficiency can cause a number of diseases, including rickets, osteomalacia, osteoporosis, and muscle weakness. It can also increase the risk of fractures and heart disease.  Calcium, vitamin D, and parathyroid hormone (PTH) are all involved in regulating calcium levels in the blood and maintaining bone health. They work together in a feedback loop to keep calcium levels in check. 

The following test are included:

Calcium

Intact Parathyroid

Vitamin D

Fasting not required.

Additional information about each test is listed below:

Calcium is important for bone health, and vitamin D helps the body absorb calcium. When you have a vitamin D deficiency, your body can't absorb calcium properly, which can lead to bone and muscle problems. 

When there is a vitamin D deficiency, an intact parathyroid gland is important because it allows the body to compensate by producing more parathyroid hormone (PTH), which helps to raise blood calcium levels by stimulating the release of calcium from bones when dietary calcium absorption is reduced due to low vitamin D levels; essentially, the parathyroid glands act as a "safety mechanism" to maintain proper calcium balance in the blood even when vitamin D is deficient. 

A vitamin D test measures the amount of vitamin D in your blood. It's used to check for vitamin D deficiency, which can lead to bone disorders and other medical conditions.