Vitamin D Plus (D2, D3 & Vitamin D Metabolite Ratio) At Home Test Kit

At-home finger-prick test measuring both forms of vitamin D and the metabolite ratio.

What this test measures

25-hydroxyvitamin D2 and D3 separately, plus the vitamin D metabolite ratio, from a dried blood spot.

Why these markers matter

Standard vitamin D testing reports a single total. This separates D2 from D3 — D3 is the form made in skin and found in most supplements, D2 the plant-derived form. The metabolite ratio adds information about how vitamin D is being processed rather than just how much is present. Useful where a standard result hasn't matched the picture.

What you get

Kit posted to you with lancet, card and return envelope. Results in your private dashboard, typically one to two weeks after collection.

Before you collect

Note the form and dose of any vitamin D supplement — D2 versus D3 matters for reading this result.

Who this suits

People supplementing vitamin D who want more detail than a single total.

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