What we test
Every test, explained.
See what we check in each blood test, from the comprehensive test to focused monitoring and standalone modules. Tap any marker for a short explanation.
ALT
Enzyme found primarily in the liver. Increases may indicate liver stress.
Liver & bile ducts
Albumin
Important protein for substance transport and fluid balance in vessels.
Liver & bile ducts
ApoB
Total atherogenic particle count; strong predictor for cardiovascular disease.
Heart & vessels
AST
Enzyme in liver and muscles. Often measured with ALT for a complete picture.
Liver & bile ducts
Platelets
Cells crucial for clotting. Abnormalities may indicate coagulation issues.
Blood clotting
Bilirubin
Breakdown product of red blood cells. High levels may imply liver or bile issues.
Liver & bile ducts
Calcium
Essential for strong bones, muscle contraction, and nerve signaling.
Minerals
Creatinine
Muscle waste product. Key indicator of the kidney's filtration function.
Kidneys
CRP
Protein that rises rapidly during inflammation, infection, or tissue damage.
Inflammation markers
eGFR
Calculated value estimating how much blood the kidneys filter per minute.
Kidneys
Eosinophils
White blood cells active during allergies and parasitic infections.
White blood cells
Ferritin
Body iron stores. Low means deficiency, high can indicate inflammation.
Iron metabolism
Folate
Vitamin B9, essential for cell division and blood cell production.
Vitamins
Gamma-GT
Sensitive marker for bile ducts and liver. Reacts quickly to alcohol intake.
Liver & bile ducts
Glucose (Fasting)
Blood sugar after fasting. Primary test for energy metabolism and diabetes.
Pancreas
HbA1c
Average blood sugar over past months. Provides stable glucose view.
Pancreas
HDL Cholesterol
The 'good' cholesterol that transports fats to the liver.
Heart & vessels
Hemoglobin
Protein in red blood cells carrying oxygen. Measure for anemia.
Red blood cells
Potassium
Electrolyte crucial for nerve signals, muscles, and heart function.
Minerals
LDL Cholesterol
The 'bad' cholesterol that can accumulate in vessel walls.
Heart & vessels
Magnesium
Involved in energy, muscles, and nerves. Deficiency can cause cramps.
Minerals
Sodium
Important for fluid balance, blood pressure, and impulse conduction.
Minerals
TSH
Hormone controlling the thyroid. First check for thyroid function.
Thyroid
Vitamin B12
Essential for nervous system and blood. Deficiency common in vegetarians.
Vitamins
Vitamin D
Needed for strong bones and immune system. Deficiency is common.
Vitamins
Homocysteine
Amino acid harmful at high levels. Check for B-vitamin status.
Vitamin-related markers
Lp(a)
Genetically determined fat particle. Independent risk factor for heart disease.
Heart & vessels
AST/ALT Ratio
Ratio between liver enzymes. Indicates potential cause of liver stress.
Liver & bile ducts
Total Cholesterol
The total amount of cholesterol in the blood.
Heart & vessels
Triglycerides
Fats in blood providing energy. Elevated with obesity or sugar intake.
Heart & vessels
Non-HDL Cholesterol
Total cholesterol minus HDL: the cholesterol in every apoB-carrying particle.
Heart & vessels
LDL/HDL Ratio
Risk indicator for cardiovascular diseases.
Heart & vessels
Leukocytes (WBC)
Total white blood cell count. General measure of immune defense.
White blood cells
Neutrophils
The 'first line' of defense, mainly active against bacterial infections.
White blood cells
Lymphocytes
Involved in specific immunity (antibodies) and viral infections.
White blood cells
Monocytes
Clear dead cells and assist in chronic infections.
White blood cells
Reticulocytes
Young red blood cells: how hard your bone marrow is producing right now.
Red blood cells
NLR (neutrophil/lymphocyte)
The ratio between two kinds of white blood cell, from your blood count.
Inflammation markers
PLR (platelet/lymphocyte)
The ratio between your platelets and your lymphocytes.
Inflammation markers
SII (inflammation index)
Platelets times neutrophils divided by lymphocytes, from your blood count.
Inflammation markers
Total protein
All the proteins in your blood together, with albumin the largest group.
Liver & bile ducts
Globulin
The protein fraction left when albumin is taken off your total protein.
Liver & bile ducts
Albumin/globulin ratio
The ratio between albumin and globulin from the same analyses.
Liver & bile ducts
Conjugated bilirubin
The share of your bilirubin the liver has already processed.
Liver & bile ducts
Unconjugated bilirubin
The unprocessed share, from total minus conjugated bilirubin.
Liver & bile ducts
LDH
An enzyme from many tissues, released when cells are damaged.
Cell damage
FIB-4
A score from age, AST, ALT and platelets, aimed at liver fibrosis.
Liver & bile ducts
Urea
A waste product of protein metabolism your kidneys clear.
Kidneys
Cystatin C
A measure of kidney filtration that barely depends on muscle mass.
Kidneys
eGFR from cystatin C
Your estimated kidney filtration, computed from cystatin C.
Kidneys
ApoA1
The carrier protein on your HDL particles, the counterpart to ApoB.
Heart & vessels
NT-proBNP
A fragment your heart muscle releases when chamber pressure rises.
Heart & vessels
TC/HDL ratio
The ratio between total cholesterol and HDL.
Heart & vessels
AIP (atherogenic index of plasma)
An index from triglycerides and HDL, aimed at particle size.
Heart & vessels
LDL/ApoB ratio
Cholesterol per LDL particle: an estimate of how large your particles are.
Heart & vessels
ApoB/ApoA1 ratio
The ratio between the carrier proteins of your two particle types.
Heart & vessels
Insulin
The hormone with which your pancreas moves glucose into your cells.
Metabolic hormones
C-peptide
Released with insulin, showing your own production.
Metabolic hormones
TyG index
An index from fasting glucose and triglycerides for insulin sensitivity.
Pancreas
eAG (estimated average glucose)
Your HbA1c converted into an average glucose value.
Pancreas
Chloride
An electrolyte that moves with sodium and shapes your acid balance.
Minerals
Bicarbonate
The buffer that holds your blood's acidity within a narrow margin.
Minerals
Phosphate
A mineral that builds bone with calcium and helps transfer energy.
Minerals
Ionised calcium
The free, active share of your calcium, measured instead of calculated.
Minerals
PTH (parathyroid hormone)
The hormone from your parathyroids that steers calcium and phosphate.
Metabolic hormones
Vitamin B1
Thiamine: needed to turn carbohydrates into energy.
Vitamins
Vitamin B6
Involved in your protein metabolism and your neurotransmitters.
Vitamins
Zinc
A trace element for your immunity, your skin and hundreds of enzymes.
Minerals
Copper
A trace element for your iron metabolism and connective tissue.
Minerals
Ceruloplasmin
The protein that carries copper, and the context for your copper value.
Minerals
Selenium
A trace element for your thyroid and your antioxidant system.
Minerals
Omega-3 index
The share of omega-3 fatty acids in your red blood cells.
Fatty acids
ESR (sedimentation rate)
How fast red cells settle: a slow measure of inflammation.
Inflammation markers
IgG
The largest group of antibodies: your immune memory.
Antibodies
IgA
The antibody of your mucous membranes, in airways and gut.
Antibodies
IgM
The antibody you make first when an infection is new.
Antibodies
ANA (antinuclear antibodies)
Antibodies against cell nuclei: the first step in autoimmune work-up.
Antibodies
Anti-CCP
Antibodies that belong to a rheumatoid arthritis work-up.
Antibodies
Rheumatoid factor
An antibody read with anti-CCP in joint complaints.
Antibodies
tTG-IgA
The first analysis when coeliac disease is investigated.
Antibodies
Free T3
The active thyroid hormone, the unbound share.
Thyroid
TPO antibodies
Antibodies against an enzyme in your thyroid.
Thyroid
Tg antibodies
Antibodies against thyroglobulin, your thyroid's own protein.
Thyroid
Total testosterone
All your testosterone together: bound and free combined.
Sex hormones
SHBG
The protein that binds sex hormones and sets how much is active.
Sex hormones
Free testosterone
The active share, computed from testosterone, SHBG and albumin.
Sex hormones
FAI (free androgen index)
The ratio between total testosterone and SHBG.
Sex hormones
LH
A pituitary hormone that drives sex hormone production.
Pituitary hormones
FSH
A pituitary hormone that drives egg and sperm maturation.
Pituitary hormones
Oestradiol
The main oestrogen, present in women and men alike.
Sex hormones
Progesterone
The hormone of the second cycle half, drawn at a set moment.
Sex hormones
Prolactin
A pituitary hormone that can influence your cycle and sex hormones.
Pituitary hormones
Cortisol
Your stress hormone, which follows a fixed daily rhythm.
Stress / adrenals
DHEA-S
An adrenal hormone that is a building block for sex hormones.
Stress / adrenals
IGF-1
The messenger of your growth hormone, released by your liver.
Metabolic hormones
Uric acid
A breakdown product of purines your kidneys filter from your blood.
Kidneys
Basophils
Involved in allergic reactions and defense against parasites.
White blood cells
Erythrocytes (RBC)
Total red blood cell count, responsible for oxygen transport.
Red blood cells
Hematocrit
The volume percentage of red blood cells in the blood.
Red blood cells
MCV
Average size of red blood cells. Important for anemia typing.
Red blood cells
MCH
Average amount of hemoglobin per red blood cell.
Red blood cells
MCHC
Average concentration of hemoglobin in red blood cells.
Red blood cells
RDW
Variation in red blood cell size (distribution width).
Red blood cells
Free T4
The active thyroid hormone available for body tissues.
Thyroid
ALP
Enzyme from bile ducts and bones. Reflects liver and bone metabolism.
Liver & bile ducts
Corrected Calcium
Calcium adjusted for albumin, for a truer picture of the freely available part.
Minerals
MMA
Metabolite that builds up when your cells run short on vitamin B12.
Vitamin-related markers
PSA
Protein made almost entirely by the prostate; usually measured for urinary symptoms.
Prostate
Serum Iron
Snapshot of the iron circulating in your blood at that moment.
Iron metabolism
Transferrin
Transport protein that carries iron through your blood to your cells.
Iron metabolism
Transferrin Saturation
The percentage of your transferrin that is loaded with iron.
Iron metabolism
Triglycerides/HDL Ratio
The ratio between your triglycerides and your HDL cholesterol, from both values.
Heart & vessels
ALT
Enzyme found primarily in the liver. Increases may indicate liver stress.
Liver & bile ducts
Albumin
Important protein for substance transport and fluid balance in vessels.
Liver & bile ducts
ApoB
Total atherogenic particle count; strong predictor for cardiovascular disease.
Heart & vessels
AST
Enzyme in liver and muscles. Often measured with ALT for a complete picture.
Liver & bile ducts
Platelets
Cells crucial for clotting. Abnormalities may indicate coagulation issues.
Blood clotting
Bilirubin
Breakdown product of red blood cells. High levels may imply liver or bile issues.
Liver & bile ducts
Calcium
Essential for strong bones, muscle contraction, and nerve signaling.
Minerals
Creatinine
Muscle waste product. Key indicator of the kidney's filtration function.
Kidneys
CRP
Protein that rises rapidly during inflammation, infection, or tissue damage.
Inflammation markers
eGFR
Calculated value estimating how much blood the kidneys filter per minute.
Kidneys
Eosinophils
White blood cells active during allergies and parasitic infections.
White blood cells
Ferritin
Body iron stores. Low means deficiency, high can indicate inflammation.
Iron metabolism
Folate
Vitamin B9, essential for cell division and blood cell production.
Vitamins
Gamma-GT
Sensitive marker for bile ducts and liver. Reacts quickly to alcohol intake.
Liver & bile ducts
Glucose (Fasting)
Blood sugar after fasting. Primary test for energy metabolism and diabetes.
Pancreas
HbA1c
Average blood sugar over past months. Provides stable glucose view.
Pancreas
HDL Cholesterol
The 'good' cholesterol that transports fats to the liver.
Heart & vessels
Hemoglobin
Protein in red blood cells carrying oxygen. Measure for anemia.
Red blood cells
Potassium
Electrolyte crucial for nerve signals, muscles, and heart function.
Minerals
LDL Cholesterol
The 'bad' cholesterol that can accumulate in vessel walls.
Heart & vessels
Magnesium
Involved in energy, muscles, and nerves. Deficiency can cause cramps.
Minerals
Sodium
Important for fluid balance, blood pressure, and impulse conduction.
Minerals
TSH
Hormone controlling the thyroid. First check for thyroid function.
Thyroid
Vitamin B12
Essential for nervous system and blood. Deficiency common in vegetarians.
Vitamins
Vitamin D
Needed for strong bones and immune system. Deficiency is common.
Vitamins
Homocysteine
Amino acid harmful at high levels. Check for B-vitamin status.
Vitamin-related markers
Lp(a)
Genetically determined fat particle. Independent risk factor for heart disease.
Heart & vessels
AST/ALT Ratio
Ratio between liver enzymes. Indicates potential cause of liver stress.
Liver & bile ducts
Total Cholesterol
The total amount of cholesterol in the blood.
Heart & vessels
Triglycerides
Fats in blood providing energy. Elevated with obesity or sugar intake.
Heart & vessels
Non-HDL Cholesterol
Total cholesterol minus HDL: the cholesterol in every apoB-carrying particle.
Heart & vessels
LDL/HDL Ratio
Risk indicator for cardiovascular diseases.
Heart & vessels
Leukocytes (WBC)
Total white blood cell count. General measure of immune defense.
White blood cells
Neutrophils
The 'first line' of defense, mainly active against bacterial infections.
White blood cells
Lymphocytes
Involved in specific immunity (antibodies) and viral infections.
White blood cells
Monocytes
Clear dead cells and assist in chronic infections.
White blood cells
Reticulocytes
Young red blood cells: how hard your bone marrow is producing right now.
Red blood cells
NLR (neutrophil/lymphocyte)
The ratio between two kinds of white blood cell, from your blood count.
Inflammation markers
PLR (platelet/lymphocyte)
The ratio between your platelets and your lymphocytes.
Inflammation markers
SII (inflammation index)
Platelets times neutrophils divided by lymphocytes, from your blood count.
Inflammation markers
Total protein
All the proteins in your blood together, with albumin the largest group.
Liver & bile ducts
Globulin
The protein fraction left when albumin is taken off your total protein.
Liver & bile ducts
Albumin/globulin ratio
The ratio between albumin and globulin from the same analyses.
Liver & bile ducts
Conjugated bilirubin
The share of your bilirubin the liver has already processed.
Liver & bile ducts
Unconjugated bilirubin
The unprocessed share, from total minus conjugated bilirubin.
Liver & bile ducts
LDH
An enzyme from many tissues, released when cells are damaged.
Cell damage
FIB-4
A score from age, AST, ALT and platelets, aimed at liver fibrosis.
Liver & bile ducts
Urea
A waste product of protein metabolism your kidneys clear.
Kidneys
Cystatin C
A measure of kidney filtration that barely depends on muscle mass.
Kidneys
eGFR from cystatin C
Your estimated kidney filtration, computed from cystatin C.
Kidneys
ApoA1
The carrier protein on your HDL particles, the counterpart to ApoB.
Heart & vessels
NT-proBNP
A fragment your heart muscle releases when chamber pressure rises.
Heart & vessels
TC/HDL ratio
The ratio between total cholesterol and HDL.
Heart & vessels
AIP (atherogenic index of plasma)
An index from triglycerides and HDL, aimed at particle size.
Heart & vessels
LDL/ApoB ratio
Cholesterol per LDL particle: an estimate of how large your particles are.
Heart & vessels
ApoB/ApoA1 ratio
The ratio between the carrier proteins of your two particle types.
Heart & vessels
Insulin
The hormone with which your pancreas moves glucose into your cells.
Metabolic hormones
C-peptide
Released with insulin, showing your own production.
Metabolic hormones
TyG index
An index from fasting glucose and triglycerides for insulin sensitivity.
Pancreas
eAG (estimated average glucose)
Your HbA1c converted into an average glucose value.
Pancreas
Chloride
An electrolyte that moves with sodium and shapes your acid balance.
Minerals
Bicarbonate
The buffer that holds your blood's acidity within a narrow margin.
Minerals
Phosphate
A mineral that builds bone with calcium and helps transfer energy.
Minerals
Ionised calcium
The free, active share of your calcium, measured instead of calculated.
Minerals
PTH (parathyroid hormone)
The hormone from your parathyroids that steers calcium and phosphate.
Metabolic hormones
Vitamin B1
Thiamine: needed to turn carbohydrates into energy.
Vitamins
Vitamin B6
Involved in your protein metabolism and your neurotransmitters.
Vitamins
Zinc
A trace element for your immunity, your skin and hundreds of enzymes.
Minerals
Copper
A trace element for your iron metabolism and connective tissue.
Minerals
Ceruloplasmin
The protein that carries copper, and the context for your copper value.
Minerals
Selenium
A trace element for your thyroid and your antioxidant system.
Minerals
Omega-3 index
The share of omega-3 fatty acids in your red blood cells.
Fatty acids
ESR (sedimentation rate)
How fast red cells settle: a slow measure of inflammation.
Inflammation markers
IgG
The largest group of antibodies: your immune memory.
Antibodies
IgA
The antibody of your mucous membranes, in airways and gut.
Antibodies
IgM
The antibody you make first when an infection is new.
Antibodies
ANA (antinuclear antibodies)
Antibodies against cell nuclei: the first step in autoimmune work-up.
Antibodies
Anti-CCP
Antibodies that belong to a rheumatoid arthritis work-up.
Antibodies
Rheumatoid factor
An antibody read with anti-CCP in joint complaints.
Antibodies
tTG-IgA
The first analysis when coeliac disease is investigated.
Antibodies
Free T3
The active thyroid hormone, the unbound share.
Thyroid
TPO antibodies
Antibodies against an enzyme in your thyroid.
Thyroid
Tg antibodies
Antibodies against thyroglobulin, your thyroid's own protein.
Thyroid
Total testosterone
All your testosterone together: bound and free combined.
Sex hormones
SHBG
The protein that binds sex hormones and sets how much is active.
Sex hormones
Free testosterone
The active share, computed from testosterone, SHBG and albumin.
Sex hormones
FAI (free androgen index)
The ratio between total testosterone and SHBG.
Sex hormones
LH
A pituitary hormone that drives sex hormone production.
Pituitary hormones
FSH
A pituitary hormone that drives egg and sperm maturation.
Pituitary hormones
Oestradiol
The main oestrogen, present in women and men alike.
Sex hormones
Progesterone
The hormone of the second cycle half, drawn at a set moment.
Sex hormones
Prolactin
A pituitary hormone that can influence your cycle and sex hormones.
Pituitary hormones
Cortisol
Your stress hormone, which follows a fixed daily rhythm.
Stress / adrenals
DHEA-S
An adrenal hormone that is a building block for sex hormones.
Stress / adrenals
IGF-1
The messenger of your growth hormone, released by your liver.
Metabolic hormones
Uric acid
A breakdown product of purines your kidneys filter from your blood.
Kidneys
Basophils
Involved in allergic reactions and defense against parasites.
White blood cells
Erythrocytes (RBC)
Total red blood cell count, responsible for oxygen transport.
Red blood cells
Hematocrit
The volume percentage of red blood cells in the blood.
Red blood cells
MCV
Average size of red blood cells. Important for anemia typing.
Red blood cells
MCH
Average amount of hemoglobin per red blood cell.
Red blood cells
MCHC
Average concentration of hemoglobin in red blood cells.
Red blood cells
RDW
Variation in red blood cell size (distribution width).
Red blood cells
Free T4
The active thyroid hormone available for body tissues.
Thyroid
ALP
Enzyme from bile ducts and bones. Reflects liver and bone metabolism.
Liver & bile ducts
Corrected Calcium
Calcium adjusted for albumin, for a truer picture of the freely available part.
Minerals
MMA
Metabolite that builds up when your cells run short on vitamin B12.
Vitamin-related markers
PSA
Protein made almost entirely by the prostate; usually measured for urinary symptoms.
Prostate
Serum Iron
Snapshot of the iron circulating in your blood at that moment.
Iron metabolism
Transferrin
Transport protein that carries iron through your blood to your cells.
Iron metabolism
Transferrin Saturation
The percentage of your transferrin that is loaded with iron.
Iron metabolism
Triglycerides/HDL Ratio
The ratio between your triglycerides and your HDL cholesterol, from both values.
Heart & vessels
Vitamin D
1 value€49 one-time · or from +€19 as an add-on to another blood test€49 one-timefrom +€19 as an add-onBetween October and April your skin makes almost no vitamin D at this latitude. This value shows where you stand, and whether supplementing adds anything in your case. Vitamin D plays a part in your bones, your muscles and your immune system.
Nutrients
1Vitamins
Part of: · · ·
Part of: · · ·
Vitamin D is the hormone your skin makes from sunlight and that lets your gut absorb calcium for your bones and muscles. The blood value is your store of the past weeks, and in the Netherlands it is too low in most people from October to April, unless you top up.
Read more about Vitamin DQuality first
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Your blood is processed by leading Dutch laboratories, accredited to ISO 15189 by the Dutch Accreditation Council (Raad voor Accreditatie).
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