Blood testsVitamins and iron

Vitamin D, 25 hydroxy.

Measures the main circulating form of vitamin D, with D2 and D3.

  • Markers3
  • SampleBlood draw
  • FastingYes
  • Draw timeAny time
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What it measures.

In plain English. This describes what a lab measures; it cannot tell you what your own result means.

  • Vitamin D, 25 hydroxyVitamin D

    The main circulating form of vitamin D, which reflects what comes from sunlight, food and supplements.

How to prepare.

  1. Fasting preferred, not required. Water is fine.

Often taken with it.

  • Vitamins and iron1 marker

    Vitamin B12

    Measures vitamin B12 in the blood.

    • No fasting

    B12

  • Vitamins and iron1 marker

    Ferritin

    Measures ferritin, which reflects the body’s iron stores.

    • No fasting

    Ferritin

  • Wellness panels93 markers

    Wellness panel, light

    Blood count, metabolism, cholesterol, vitamin D and A1c, with a urine sample.

    • Fasting 12 to 14 hours

    CBC, CMP, Lipids, Ratios and more

The waitlist makes no eligibility, diagnosis, treatment, prescribing, or medication access decisions.

Clinical questions, eligibility, and care decisions happen later with a licensed provider, outside this form and only where legally available.