Vitamin D test. Measured, not guessed.
4.8 out of 5 after the blood test · 93 reviewsNo referral · results usually within 24 hours
What does a vitamin D test measure?
One value: your vitamin D, the store in your blood. It gives you three answers.
Are you low?
vitamin D in your bloodYour blood shows how much vitamin D you've made and taken in over the past few weeks. That's your store.
Is it the winter?
JFMAMJJASONDFrom October to March the sun is too low here: your skin makes almost no vitamin D. Your store is at its lowest in March.
Is your supplement working?
Your supplementa few monthsYour bloodIf you take vitamin D, a few months on you see whether your value is back. Taking more than you need adds nothing.
The value in this test
When is your vitamin D too low?
One lab calls your vitamin D too low under 30, the others already under 50. The Dutch Health Council calls under 30 a deficiency.
40 nmol/L
Grey zoneOne lab calls this normal, another too low. You're often here at the end of the winter.
For adults up to 70; from 70 the Health Council puts the line at 50. An example, not a diagnosis.
What does a vitamin D test cost?
€49 one-off
One value: your vitamin D. You pay yourself, and it doesn't count towards your deductible.
Test your vitamin D- Added to another testWith your iron, heart, hormones or blood sugar, in the same blood draw€19 extra
- In the comprehensive test52 values, vitamin D included€229 one-off
- Through your GPYour GP decides whether it's measuredDeductible with symptoms
Why one test costs less than another
A self-test measures the same value, from a drop of blood from your finger that you post yourself.
| Self-test | At Optimize | |
|---|---|---|
| Your vitamin D | ||
| Drawn by a phlebotomist, from your arm | ||
| Added to another test, in one blood draw |
What your answer looks like
How do you get your vitamin D tested?
Order online or in the app
Come fasting
Read your results
Where can you get your vitamin D 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.
- Whether you're low
- Whether it's the winter
- Whether your supplement works
€49 one-off
Test your vitamin D4.8 out of 5 after the blood test · 93 reviews
Sources 6
- 1.Health Council of the Netherlands (Dutch), Evaluation of the dietary reference values for vitamin D. 2012. gezondheidsraad.nl
- 2.Netherlands Nutrition Centre (Dutch), Vitamin D. voedingscentrum.nl
- 3.Unilabs, reference values vitamin D. bepalingenklapper.nl
- 4.Star-shl, reference values vitamin D. star-shl.nl
- 5.Certe, reference values vitamin D. bepalingenwijzer.certe.nl
- 6.Clinical Diagnostics, reference values vitamin D. clinicaldiagnostics.nl