Ionised calcium

This is an important test to measure the level of ionised calcium in the blood.

Venous blood
1 tests included
7 days turnaround



About Ionised calcium

What is ionised calcium?

Calcium is an essential mineral for healthy bodily functions. Along with being the primary component of bones, it is involved in other processes including blood clotting, muscle contraction and nerve damage response. Calcium is found in several different forms in the blood. Ionised calcium, also called free calcium, is the form of calcium not attached to proteins.

If calcium levels in the blood become too low, then calcium is released from the bones to restore normal levels. If calcium levels are too high, it is either stored in the bones or excreted in stool and urine. Abnormal calcium levels in the blood can indicate kidney stones/disease, parathyroid disease or bone health issues.

Why take the test?

This test measures the level of ionised calcium in the blood. It is typically used to investigate bone, kidney, liver or thyroid problems.


What's tested

Ionised Calcium

How it works



Purchase your Kit

Just order a test online and get your kit delivered right to your door unless you are ordering a COVID-19 Fit to Fly test where you will be given appointment options to attend our clinics across the United Kingdom for a nose and throat swab PCR test at the checkout stage.



Take your test and post

Follow our simple instructions to take your sample and post back the enclosed prepaid envelope to our accredited lab for processing. We also offer home or workplace visits by a qualified nurse. For COVID-19 Fit to Fly tests you must attend one of our partner clinics for our trained collection officers to take your sample. You will then have the results emailed to you.



Get results directly to your dashboard

You will receive an email notification from our medical team when your results are available on your secure personalised health dashboard.