Red Blood Cell Magnesium (RBC Magnesium) Blood Test (Healius collection centres only)

Measures magnesium concentration inside red blood cells.

Available at Healius collection centres only

Measures

Magnesium concentration inside red blood cells.

Why it matters

Serum magnesium has a known blind spot — the body maintains it by drawing on stores, so it can sit in range while stores are lower. Measuring inside red cells is intended to look past that.

Practitioners who use it consider it a better reflection of magnesium status than serum; the view isn't universal, and reference ranges vary between laboratories.

Before you collect

Healius centres only. Note magnesium supplementation.

Suits

People assessing magnesium with a practitioner who uses red cell testing.

Your next step

Once you have your results, book with a Canwell naturopath, nutritionist or practitioner to talk them through and build a wellness plan that suits you. Book with Canwell