Vitamin D, Bloodspot

• Vitamin D (as calcidiol, 25-hydroxycholecalciferol)

• 8-11 days

Why do you ask for Heart Rate Variability (HRV) measurements?
Because HRV directly and reliably tells us whether your system is mobilized or demobilized (or somewhere inbetween). In other words, it tells us how it is using its resources (which is linked to inflammatory activity, which can influence Vitamin D status). This helps provides context on whether the levels found may be due to lack of intake/sun exposure or to excessive conversion and means you finally get insights that have a fair chance of actually working for you.

Taking these measurements is simple and requires only a few minutes. Even if you do not have a wearable device (like an Oura ring), this can be easily measured using any smartphone. 

How to return the sample?

Use included return container, using included shipping label.

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