Bloodworks Weightloss
Medical weight lossThe full Bloodworks Plus base check combined with the nutritional and metabolic markers that matter during medical weight loss or GLP-1 medication (such as Ozempic or Wegovy). All-in, including blood draw and collection costs.
View all 28 biomarkers
Blood count4 biomarkers
Haemoglobin (Hb)
Oxygen-carrying protein; a low value can point to anaemia.
Why we measure this
Fatigue is the most commonly missed symptom of anaemia. A single Hb value gives immediate clarity, with no room for interpretation.
MCV
Average size of the red blood cells.
Why we measure this
MCV distinguishes the type of anaemia (iron deficiency versus B12/folate) and so directs the follow-up straight away.
Red blood cells
Number of red blood cells.
Why we measure this
Together with Hb and MCV, the red cell count gives a complete picture of the production and quality of your red blood cells.
Platelets
Blood platelets; involved in clotting.
Why we measure this
An abnormal platelet count can point to a clotting or bone marrow problem and is captured in a single measurement.
Kidney function4 biomarkers
Urea
Waste product of protein metabolism; kidneys and hydration.
Why we measure this
Urea rises early in kidney disease and at the same time tells us something about your protein intake and hydration status.
Creatinine
Muscle breakdown product; kidney function.
Why we measure this
The most widely used kidney marker. We always combine it with eGFR so the result is corrected for your age.
eGFR
Calculated filtration capacity of the kidneys.
Why we measure this
Chronic kidney damage starts without symptoms. eGFR expresses filtration capacity as a percentage of normal, which makes it immediately understandable.
Uric acid
Waste product of purine metabolism; kidney and gout.
Why we measure this
Raised uric acid is linked to gout and kidney stones and is an independent risk factor for heart and kidney damage.
Electrolytes2 biomarkers
Sodium
Electrolyte; fluid balance, blood pressure and nerve function.
Why we measure this
Chronically low sodium quietly affects an estimated 5 to 10% of adults, including people without any symptoms.
Potassium
Electrolyte; heart conduction and muscle function.
Why we measure this
Potassium abnormalities, including those caused by diuretics or stomach protectors, cause no symptoms until they become serious.
Liver function7 biomarkers
Alkaline phosphatase (ALP)
Liver enzyme; also involved in bone metabolism.
Why we measure this
ALP can point to biliary, liver or bone problems. Reading it alongside the other liver values gives the doctor the right direction.
Gamma-GT (GGT)
Liver enzyme; sensitive to alcohol and liver strain.
Why we measure this
GGT is the first to rise with excessive alcohol use or liver strain, sometimes years before other values change.
AST
Liver enzyme; raised when liver cells are damaged.
Why we measure this
AST indicates active liver cell damage. The AST/ALT ratio helps us identify the type of liver condition.
ALT
Liver enzyme; raised in liver inflammation.
Why we measure this
ALT is liver-specific and rises with inflammation or damage. A raised ALT always calls for further assessment.
Bilirubin (total)
Breakdown product of haemoglobin; reflects liver and bile status.
Why we measure this
Bilirubin reflects both the breakdown of red blood cells and bile drainage. A raised value always deserves interpretation in context.
Bilirubin (conjugated)
Direct fraction; raised when bile drainage is obstructed.
Why we measure this
The direct fraction separates bile drainage problems from other causes of raised bilirubin, which makes targeted follow-up possible.
Albumin
Protein produced by the liver; reflects nutritional status.
Why we measure this
Albumin drops early in undernutrition or chronic illness, often long before other symptoms appear.
Heart and cholesterol4 biomarkers
Total cholesterol
The total amount of cholesterol in your blood.
Why we measure this
On its own an unreliable predictor, which is why we always measure it as part of a full lipid profile.
HDL cholesterol
"Good" cholesterol; transports cholesterol back to the liver.
Why we measure this
The higher your HDL, the lower your cardiovascular risk. HDL is one of the strongest protective markers we know.
LDL cholesterol
"Bad" cholesterol; raised levels are associated with cardiovascular risk.
Why we measure this
Raised LDL is the best-known risk factor for arterial plaque and responds well to lifestyle and, where needed, treatment.
Triglycerides
Fat molecule; raised with excess weight and a high sugar intake.
Why we measure this
Triglycerides respond strongly to diet and lifestyle and are an independent risk factor, separate from cholesterol.
Thyroid2 biomarkers
TSH
Pituitary hormone that drives thyroid activity.
Why we measure this
TSH is the most sensitive thyroid marker and rises even in mild hypothyroidism, sometimes years before symptoms such as fatigue or weight gain.
Free T4 (FT4)
Active thyroid hormone; low in hypothyroidism.
Why we measure this
FT4 confirms whether a TSH abnormality originates in the thyroid or the pituitary gland, which determines the next step.
Blood sugar2 biomarkers
Glucose (fasting)
Blood sugar level; raised in diabetes or pre-diabetes.
Why we measure this
Pre-diabetes goes unnoticed in millions of people. Acting early through lifestyle can prevent diabetes.
HbA1c
Long-term blood sugar (3 months); diabetes marker.
Why we measure this
HbA1c reflects three months of blood sugar and is fairer than a single snapshot, which also makes it ideal for tracking the effect of a diet.
Nutritional status during weight loss3 biomarkers
Ferritin
Iron stores; can drop when you eat less.
Why we measure this
During a weight loss or GLP-1 programme your food intake falls; ferritin shows whether your iron stores are dropping with it, before symptoms appear.
Vitamin B12
Essential for energy and nerve function.
Why we measure this
Eating less, or having a smaller stomach capacity, depletes B12 faster; the deficiency develops gradually and is easy to prevent.
Vitamin D (25-OH)
Important for bone health and immunity.
Why we measure this
With excess weight the baseline value is often low; monitoring it during weight loss helps protect your bone health.
- 28 biomarkers measured
- Doctor-reviewed report
- Results within a few working days
How Bloodworks works
Order online
Choose your package and preferred location
Receive your lab form
Within 24 hours by email, with appointment planner
Schedule your blood draw
Or choose a walk-in location
Blood draw
Takes just a few minutes
Receive your report
Securely, within a few working days from our physicians
Included
Your personal health dashboard
Sample view · fictitious data.
Within range
of the biomarkers within the lab reference
Latest measurement: 1 Jul 2026
Needs attention
Your development
Vitamine D3
- All your results in one secure place
- See your development with every new measurement
- Compare against your own earlier values
Included
Your laboratory report
Every abnormality is given context and advice by a doctor. Reference values always come from the laboratory.
Client
Reference
Collection date
06-05-2025
Report date
08-05-2025
2 abnormalities found
Magnesium & vitamin D too low, see explanation
Vitamins & Minerals
Doctor comment
Your magnesium and vitamin D are markedly reduced. This can contribute to fatigue, muscle cramps and lower immunity. Supplements are generally available over the counter in the Netherlands. At your levels, however, we advise read more ›
Experiences
What customers say
Vanuit de sportschool geattendeerd op Bloodworks en heel tevreden. Bloedonderzoek online besteld en kon direct terecht bij een lab in de buurt. Kreeg het labformulier per e-mail en na het prikken de resultaten met uitleg ontvangen. Kom hier zeker vaker terug!
Ik heb eerder onderzoeken laten uitvoeren door andere organisaties, maar Bloodworks steekt daar met afstand bovenuit. De snelle service, het persoonlijke contact en de transparantie hebben ervoor gezorgd dat ik al mijn vervolgonderzoeken hier laat uitvoeren.
Na geregeld duizelig te voelen ben ik langs geweest bij Bloodworks voor een bloedtest, snelle service en super snel uitslag gekregen! Advies gekregen van de specialisten om een aantal waardes aan te vullen, en daadwerkelijk geen last meer van mijn klachten. Super dankbaar, vakkundig en bekwaam.
FAQ
Frequently asked questions
How long does it take to get my results?
Within a few business days of your blood draw. Some vitamins and minerals take longer, these values are almost always available within 5 business days. You receive an email as soon as your report is ready.
Do I need to fast?
Yes, we advise fasting for 8 hours for the most reliable result, particularly for glucose and triglycerides.
Where can I have my blood drawn?
Bloodworks works with more than 800 collection points across the Netherlands. You choose your location yourself after ordering.
Do I need a referral?
No, you can order directly without a referral from your GP.
Can I share my report with my GP?
Yes, your report is written in medical language and contains all relevant laboratory information. Many customers take it to a consultation.
Are the blood draw and collection costs included?
Yes, all packages are priced all-in. You pay nothing extra for the collection point or the blood draw.
Ready to gain insight?
Bloodworks Weightloss · 28 biomarkers · results within a few working days
349,-
All-in, blood draw included