Optimize
Without referral

Blood test without a doctor's referral

Sometimes you don't want to wait for a GP appointment to get your blood drawn. With Optimize you arrange a comprehensive blood test yourself, without a referral, at a location and time of your choosing.

Arrange your blood test
01 Scope
0+
biomarkers per test
02 Reach
0+
draw locations in the Netherlands
03 Access
0
referrals needed
01 Why

Why without a referral?

Not everyone has symptoms. But anyone who wants to follow their health proactively shouldn't need to go through the GP for it, and people who do have symptoms can often get a broader picture from a private test than from a typical referral.

With Optimize you decide what to measure, when and where. No waiting for a referral, no justification up front.

02 How

How does this work legally?

Private blood testing is fully legal. Optimize works with certified labs and draw locations; the results are medically valid and based on the same standards as hospital laboratories.

You pay directly, no claim goes to your insurer, and it does not count towards your deductible.

03 Next

What if values are off?

The Optimize app gives context per marker, what is normal, what is optimal and where you stand, but Optimize does not diagnose or treat.

For significantly off values we recommend talking to your doctor. You can share the app's report as an attachment, that gives your doctor your full blood picture rather than a single value.

Ready to arrange a blood test without a referral? Book an appointment in the Optimize app.

Arrange your blood test

Which biomarkers do you get without a referral?

The same comprehensive panel as our standard blood test. Fully under your own control:

Immune system
7 biomarkers
  • Total white blood cells
  • Basophils
  • Lymphocytes
  • Neutrophils
  • Monocytes
  • Eosinophils
  • C-reactive protein (CRP)
Oxygen transport
9 biomarkers
  • Total red blood cells
  • Hematocrit
  • Hemoglobin
  • MCV
  • MCHC
  • MCH
  • RDW
  • Platelets
  • Ferritin
Organs
14 biomarkers
  • Creatinine
  • eGFR
  • Apolipoprotein B (ApoB)
  • Total cholesterol
  • LDL cholesterol
  • HDL cholesterol
  • Triglycerides
  • Hemoglobin A1c
  • Glucose (fasting)
  • Gamma-GT
  • AST
  • ALT
  • Bilirubin
  • Albumin
Hormones
2 biomarkers
  • TSH
  • Free T4 (only if TSH is abnormal)
Nutrients
7 biomarkers
  • Vitamin D
  • Vitamin B12
  • Folate (vitamin B11)
  • Calcium
  • Magnesium
  • Potassium
  • Sodium
Beyond the baseline
Follow-ups & add-ons

Beyond the baseline there are deep-dive tests and add-ons for specific questions.

See the full blood test
Via the GP vs directly via Optimize

What changes when you arrange it yourself?

Via GP
Optimize
Referral required
—
Wait time to appointment
1-3 weeks
Your tempo
Number of biomarkers
8-12
40+
Counts towards your deductible
—
Per-marker explanation
—
Every marker
Personalized action plan
—
Yes, ranked
Re-test on your own initiative
—
Data ownership
Held by the GP
Yours

Clarity on your health, in your own hands

No referral required
238+ draw locations across the Netherlands
Results and explanations in the app
ALTAlbuminApolipoprotein BASTAST / ALT ratioBasophilsBilirubinPlateletsC-reactive proteinCalciumCreatinineeGFREosinophilsErythrocytesFerritinFolateGamma-glutamyltransferaseGlucoseHDL cholesterolHematocritHemoglobinHemoglobin A1cHomocysteinePotassiumLDL / HDL ratioLDL cholesterolLeukocytesLymphocytesMagnesiumMCHMCHCMCVMethylmalonic acidMonocytesSodiumNeutrophilsRDWSerum ironTotal cholesterolTotal cholesterol / HDL ratioTransferrinTransferrin saturationTriglyceridesTriglycerides / HDL ratioTSHVitamin B12Vitamin DFree T4ALTAlbuminApolipoprotein BASTAST / ALT ratioBasophilsBilirubinPlateletsC-reactive proteinCalciumCreatinineeGFREosinophilsErythrocytesFerritinFolateGamma-glutamyltransferaseGlucoseHDL cholesterolHematocritHemoglobinHemoglobin A1cHomocysteinePotassiumLDL / HDL ratioLDL cholesterolLeukocytesLymphocytesMagnesiumMCHMCHCMCVMethylmalonic acidMonocytesSodiumNeutrophilsRDWSerum ironTotal cholesterolTotal cholesterol / HDL ratioTransferrinTransferrin saturationTriglyceridesTriglycerides / HDL ratioTSHVitamin B12Vitamin DFree T4ALTAlbuminApolipoprotein BASTAST / ALT ratioBasophilsBilirubinPlateletsC-reactive proteinCalciumCreatinineeGFREosinophilsErythrocytesFerritinFolateGamma-glutamyltransferaseGlucoseHDL cholesterolHematocritHemoglobinHemoglobin A1cHomocysteinePotassiumLDL / HDL ratioLDL cholesterolLeukocytesLymphocytesMagnesiumMCHMCHCMCVMethylmalonic acidMonocytesSodiumNeutrophilsRDWSerum ironTotal cholesterolTotal cholesterol / HDL ratioTransferrinTransferrin saturationTriglyceridesTriglycerides / HDL ratioTSHVitamin B12Vitamin DFree T4
Free T4Vitamin DVitamin B12TSHTriglycerides / HDL ratioTriglyceridesTransferrin saturationTransferrinTotal cholesterol / HDL ratioTotal cholesterolSerum ironRDWNeutrophilsSodiumMonocytesMethylmalonic acidMCVMCHCMCHMagnesiumLymphocytesLeukocytesLDL cholesterolLDL / HDL ratioPotassiumHomocysteineHemoglobin A1cHemoglobinHematocritHDL cholesterolGlucoseGamma-glutamyltransferaseFolateFerritinErythrocytesEosinophilseGFRCreatinineCalciumC-reactive proteinPlateletsBilirubinBasophilsAST / ALT ratioASTApolipoprotein BAlbuminALTFree T4Vitamin DVitamin B12TSHTriglycerides / HDL ratioTriglyceridesTransferrin saturationTransferrinTotal cholesterol / HDL ratioTotal cholesterolSerum ironRDWNeutrophilsSodiumMonocytesMethylmalonic acidMCVMCHCMCHMagnesiumLymphocytesLeukocytesLDL cholesterolLDL / HDL ratioPotassiumHomocysteineHemoglobin A1cHemoglobinHematocritHDL cholesterolGlucoseGamma-glutamyltransferaseFolateFerritinErythrocytesEosinophilseGFRCreatinineCalciumC-reactive proteinPlateletsBilirubinBasophilsAST / ALT ratioASTApolipoprotein BAlbuminALTFree T4Vitamin DVitamin B12TSHTriglycerides / HDL ratioTriglyceridesTransferrin saturationTransferrinTotal cholesterol / HDL ratioTotal cholesterolSerum ironRDWNeutrophilsSodiumMonocytesMethylmalonic acidMCVMCHCMCHMagnesiumLymphocytesLeukocytesLDL cholesterolLDL / HDL ratioPotassiumHomocysteineHemoglobin A1cHemoglobinHematocritHDL cholesterolGlucoseGamma-glutamyltransferaseFolateFerritinErythrocytesEosinophilseGFRCreatinineCalciumC-reactive proteinPlateletsBilirubinBasophilsAST / ALT ratioASTApolipoprotein BAlbuminALT

How to arrange a blood test without a referral

01 Download
Download the app
Create a free Optimize account, everything is arranged from there.
02 Pick
Pick your panel
Select the blood test that fits your goal or symptom.
03 Draw
Book an appointment
Choose one of the 238+ draw locations in the Netherlands and a time that suits you.
04 Receive
Receive your results
Your values appear in the app within days, with explanations per marker.
05 Track
Re-test whenever you want
No permission needed to test again, you set the cadence.
FAQ

Frequently asked questions

The key things about blood testing without a referral.

Can you really get a blood test without a referral?

Yes. Private blood testing is fully legal in the Netherlands. You pay directly and no referral from the GP is required.

Is a private blood test medically valid?
What if I have off values?
Which biomarkers are measured?
Does it count towards my deductible?

No referral, no waiting room.

Book an appointment, draw near home, receive your results in the app.