This blood test seeks the Magnesium level, a low level of which can cause fatigue, muscle weakness, cramps, muscle spasms or even convulsions. As magnesium is found primarily inside cells, measurement of the whole blood level (as opposed to serum) gives a more accurate insight into the total level in the body.
Magnesium is the second most common mineral found inside cells, second only to potassium. It is key to more than 300 reactions in our bodies. A red cell (whole blood) magnesium test should be considered when a patient is suspected of having a lack - particularly seen in malnutrition, alcoholism, and diarrhoea amongst others. Dietary deficiency is surprisingly common though even in the western world - so if reduced intake is suspected this is a test worth considering.
A Phlebotomy Only Test
This blood test is unavailable for fingerprick (microtainer) collection. If you're unsure about how to access this test or how the procedure works please watch this short video.
Sample Collection Options for this Whole Blood Magnesium Test.

Arrange own Phlebotomy

Cost: Arrange Yourself

If you have access to a Healthcare Professional this kit for a Whole Blood Magnesium Test has all they'll need.
Visit a Partner Clinic

Cost: Add £30

We have partnered with Superdrug Pharmacies and Tuli Health in order to provide you with phlebotomy.
Nurse Home Visits

Cost: Add £55

Let our Nurses come to your home or place of work - we cover Mainland England, Wales, Scotland & Northern Ireland.
Do you have a question about this Whole Blood Magnesium? We aim to get back to you with an answer the same working day.
There's a reason that over 30% of Blue Horizon Kit requests are from patients that have used us before.
