Vitamin B12 test. What really reaches your cells.
4.8 out of 5 after the blood test · 93 reviewsNo referral · results usually within 24 hours
What does a vitamin B12 test measure?
One number doesn't tell you whether you have enough B12. This blood test gives you three answers.
Do you have enough B12?
Your body can use only part of your B12. The rest is bound to a protein that doesn't hand it to your cells.
Does it reach your cells?
Your bloodB12Your cellsIf your cells are short of B12, methylmalonic acid builds up in your blood. It rises only with a B12 deficiency.
Or is it your folate?
normalwith a shortageA shortage of B12 and of folate gives the same blood picture: larger red blood cells. That's why this test measures both.
The 3 values in this test
When is your B12 too low?
Labs call your B12 too low under 133 to 175. Yet up to about 250 your cells can already run short; there, methylmalonic acid decides.
200 pmol/L
Grey zoneEvery lab calls this normal, but your cells can already run short. Your methylmalonic acid settles it.
For adults. An example, not a diagnosis.
What does a vitamin B12 test cost?
€119 one-off
3 values: your B12, your folate and methylmalonic acid. You pay yourself, and it doesn't count towards your deductible.
Test your B12- Added to the comprehensive testB12 and folate are in it, methylmalonic acid is added€69 extra
- Through your GPYour GP decides what is measuredDeductible with symptoms
Why one test costs less than another
A self-test usually measures only your B12, from a drop of blood from your finger.
| Self-test | At Optimize | |
|---|---|---|
| Vitamin B12 | ||
| Methylmalonic acid: does it reach your cells | ||
| Folate |
What your answer looks like
How do you get your B12 tested?
Order online or in the app
Come fasting
Read your results
Where can you get your B12 tested?
What people often ask
What you want to know before you order.
Yes. You order the test online and schedule an appointment at a draw location yourself, without a referral. Want to discuss your results with your GP? Take them straight from the app.
One blood draw, and you know where you stand.
- How much B12 you have
- Whether it reaches your cells
- Whether it's your B12 or your folate
€119 one-off
Test your B124.8 out of 5 after the blood test · 93 reviews
Sources 7
- 1.NHG guideline on anemia (Dutch College of General Practitioners). richtlijnen.nhg.org
- 2.LESA laboratory diagnostics (Dutch primary-care laboratory agreement). richtlijnen.nhg.org
- 3.Thuisarts (Dutch), Maybe too little vitamin B12. thuisarts.nl
- 4.Unilabs, reference values vitamin B12. bepalingenklapper.nl
- 5.Star-shl, reference values vitamin B12. star-shl.nl
- 6.Certe, reference values vitamin B12. bepalingenwijzer.certe.nl
- 7.Clinical Diagnostics, reference values vitamin B12. clinicaldiagnostics.nl