What we test

Bone Health

These bone health markers are part of a complex feedback loop that play a critical role in maintaining bone health. When you don’t get enough calcium, you increase your risk of developing osteoporosis and stress fractures.

This blood test measures:

PTH helps maintain stable levels of calcium in the blood and is part of a ‘feedback loop’ that includes calcium, PTH, vitamin D, phosphate and magnesium. Conditions that disrupt this feedback loop can cause inappropriate increases or decreases in calcium and PTH levels.

Although called a vitamin, vitamin D (25-OHD) is actually a steroid hormone which is activated by sunshine on the skin. It is essential for bone strength as it helps the intestines absorb calcium.

Plays a critical role in developing and maintaining your overall bone health. If the total calcium result is abnormal, a corrected calcium calculation provides further information.

Most phosphate in the body comes from foods such as beans, peas and nuts, cereals, dairy products, eggs, beef, chicken and fish contain small amounts of phosphate. Phosphates are vital for energy production, muscle and nerve function, and bone growth.

Magnesium and calcium work together closely to maintain strong bones, and magnesium deficiency has been associated with an increased risk of osteoporosis.

Test instructions

Fast from all food and drink other than water for at least 8 hours, and no more than 12 hours prior to your test.

Download and print your pathology form from your i-screen dashboard.

Take your form to your local collection centre to have your blood sample taken - no need for an appointment.

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