Vitamin B12 Level

Vitamin B12 is used to make red blood cells and nerve tissue, and is found mostly in meat, eggs and dairy. A mostly plant-based diet or older age can reduce absorption and lead to a low reading.

Your numbers

Vitamin B12 (pg/mL)(pg/mL)

Result

Vitamin B12 (pg/mL)

150pg/mL

What it means

Deficient (under 200) — a mostly plant-based diet, prior stomach surgery, or pernicious anemia are common causes.

Formula

Result = band(Vitamin B12 (pg/mL))

Borderline readings (around 200) are hard to judge alone, so other markers like homocysteine are sometimes checked too.

What to enter

Input	Default	Accepted range
Vitamin B12 (pg/mL) (pg/mL)A vitamin used to make red blood cells and nerve tissue; often low on a mostly plant-based diet.	150	50 ~ 2,000

Step by step

FormulaResult = band(Vitamin B12 (pg/mL))

With the default numbersResult = band(150)

AnswerResult = 0

Quick reference table

Results when only Vitamin B12 (pg/mL) (pg/mL) changes and everything else stays put.

Vitamin B12 (pg/mL) (pg/mL)	Result	Vitamin B12 (pg/mL) (pg/mL)
75	0	75
113	0	113
150	0	150
225	1	225
300	1	300

What each result means

Result	At default values
ResultWhat the formula gives back — the answer this page is for.	0
Vitamin B12 (pg/mL) (pg/mL)A vitamin used to make red blood cells and nerve tissue; often low on a mostly plant-based diet.	150

Common mistakes

Borderline readings (around 200) are hard to judge alone, so other markers like homocysteine are sometimes checked too.

Glossary

Vitamin B12 (pg/mL): A vitamin used to make red blood cells and nerve tissue; often low on a mostly plant-based diet.
Result: What the formula gives back — the answer this page is for.

Frequently asked questions

QHow is Vitamin B12 Level calculated?

Result = band(Vitamin B12 (pg/mL)) — Vitamin B12 is used to make red blood cells and nerve tissue, and is found mostly in meat, eggs and dairy. A mostly plant-based diet or older age can reduce absorption and lead to a low reading.

QCan you walk through an example?

With Vitamin B12 (pg/mL) 150pg/mL, the answer is Result 0.

QWhat do I need to enter?

Enter Vitamin B12 (pg/mL). The result recalculates as you type, and an empty box counts as zero.

QHow much does the answer move if I change a number?

Changing only Vitamin B12 (pg/mL) (pg/mL) moves the answer to Vitamin B12 (pg/mL) (pg/mL) 75 → Result 0 and Vitamin B12 (pg/mL) (pg/mL) 300 → Result 1. The table below lays out five steps.

QHow are the numbers rounded?

Money is shown to the nearest whole unit, percentages to one decimal place and everything else to two. What you see is rounded; the calculation itself carries the unrounded value forward.

QAnything to watch out for?

Borderline readings (around 200) are hard to judge alone, so other markers like homocysteine are sometimes checked too.

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These calculators help you understand health figures; they do not replace diagnosis or prescription. See a clinician if you have symptoms.