Blood testsVitamins and iron

Vitamin B12 and folate.

Measures two B vitamins the body needs to make new cells.

  • Markers2
  • SampleBlood draw
  • FastingNone
  • 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 B12B12

    A vitamin the body needs to make red blood cells and keep nerves working. It comes from food or supplements.

  • Folate

    A B vitamin the body needs to make new cells. Labs measure how much is in the blood.

How to prepare.

  1. No fasting needed. Eat and drink as usual.
  2. Stop high dose biotin supplements 72 hours before the draw.

Often taken with it.

  • Vitamins and iron1 marker

    Vitamin B12

    Measures vitamin B12 in the blood.

    • No fasting

    B12

  • Vitamins and iron4 markers

    Iron, TIBC and ferritin

    Measures iron, how much the blood could carry, and the body’s iron stores.

    Iron, TIBC, % saturation, Ferritin

  • Vitamins and iron3 markers

    Vitamin D, 25 hydroxy

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

    • Fasting preferred, not required

    Vitamin D

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.