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Blood Test Tracker

Vitamin B12 Deficiency Panel

B12 and folate status with functional and autoimmune markers.

8 tests explainedAlso printed as B12 Deficiency Panel, Pernicious Anemia Panel, B12 and Folate Panel

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Type the results from your report. Each one is placed on its usual range, with its status in words.

Type the results from your Vitamin B12 Deficiency Panel report. Each one is placed on its usual range as you type.

  • AU/mL

Nothing you type here leaves your browser. Ranges differ a little between labs, so the range on your own report is the one your result is judged against.

The 8 tests in this panel

What each one measures and the range labs usually print for adults. Ranges differ a little between labs, so the range on your own report is the one your result is judged against.

  • Vitamin B12 (Cobalamin)

    Measures the vitamin B12 in your blood. Your nerves and red blood cells need B12, so this is the usual first check of your B12 status.

    Adults
    232–1,245 pg/mL

  • Active Vitamin B12 (Holotranscobalamin)

    The part of your vitamin B12 that is attached to its carrier protein and ready for your cells to use. It's often called 'active B12'.

  • Methylmalonic Acid (MMA), Serum

    Measures methylmalonic acid, a substance that builds up in your blood when your cells do not get enough usable vitamin B12.

    60–79
    69–390 nmol/L
    80+
    85–423 nmol/L

  • Homocysteine

    Homocysteine is an amino acid your body clears with B vitamins. Higher levels can reflect low B12 or folate, kidney function, age or genetics.

    18–60
    up to 14.5 µmol/L
    61–70
    up to 17.2 µmol/L
    71–80
    up to 19.2 µmol/L
    81+
    up to 21.3 µmol/L

  • Folate (Vitamin B9), Serum

    Measures folate (vitamin B9) in your blood. It mostly reflects what you ate recently, and it helps explain anemia and low folate intake.

    Adults
    3 and above ng/mL

  • Intrinsic Factor Blocking Antibody

    Looks for antibodies that block intrinsic factor, a stomach protein needed to absorb vitamin B12; a positive result supports pernicious anemia.

    Adults
    0–1.1 AU/mL

  • Anti-Parietal Cell Antibody (APCA)

    Antibodies against the cells that make stomach acid. They are linked to autoimmune gastritis and pernicious anemia, but also appear in people who have neither.

    Adults
    0–20 Units

  • Mean Corpuscular Volume (MCV)

    The average size of your red blood cells. It helps show whether they run smaller or larger than usual.

    18+
    80–100 fL