Coming soon

Lab services are not currently available. We're working to bring Feelrx Labs online soon — everything below is a preview of what's coming.

Individual Labs/Nutrient Status

Quest / Nutrient Status

Magnesium, RBC

This test measures magnesium levels inside red blood cells, providing a **"more accurate"** reflection of long-term magnesium status than serum magnesium. Magnesium is involved in over 300 enzymatic reactions, including those...

Coming Soon

What this lab measures

This test measures magnesium levels inside red blood cells, providing a **"more accurate"** reflection of long-term magnesium status than serum magnesium. Magnesium is involved in over 300 enzymatic reactions, including those...

One individual marker · Quest · Clinician reviewed

How testing works

  1. Order online

    Choose your marker and add a brief medical history so your result has context from the first draw.

  2. Visit a partner lab

    Take your order to a certified Quest location for a short blood draw.

  3. Clinician review

    A licensed clinician reviews your result and shares clear interpretation with next steps.

FAQ

After ordering, visit a certified Quest partner location for a short blood draw. No insurance is required.

Feelrx / Start here

Know your baseline.

Order a panel online, draw at a certified partner lab, and receive a clear clinician review.

Coming Soon