Extended blood test for weight loss: your broader check with nutrients

After losing weight for a longer time while eating less, your nutrients can change alongside your metabolism. An extended check maps both: your metabolic values and a number of vitamins and minerals.

That way you get a broader picture at a later point in your journey, which you can discuss with a doctor.

• People who have been using a weight-loss injection for a longer time and want a broader check
• People who want to measure vitamins and iron alongside their metabolic values
• People who want to follow or rule out a nutrient deficiency during a weight-loss injection
• People who want to arrange this without a referral

This check does not replace medical advice. Discuss your journey and any deficiencies with a doctor.

• Blood sugar and insulin: HbA1c, fasting glucose and fasting insulin.
• Cholesterol and fats: total cholesterol, HDL, triglycerides and ApoB.
• Liver: ALT, AST and albumin.
• Kidneys and minerals: creatinine, sodium and potassium.
• Pancreas: lipase.
• Nutrients: vitamin D, vitamin B12 and ferritin.

Your blood sugar, insulin and lipid values can place your metabolism and progress in context. Your liver and kidney values give a view of those organs at this point in your journey.

Because eating less for a long time can affect your nutrients, insight into vitamin D, vitamin B12 and ferritin may be relevant. Together these remain a snapshot, not a diagnosis.

Blood is drawn at a certified collection point. In the Netherlands there are 650+ locations, which you choose yourself after ordering.

This is a blood test without a GP: you pick a location and a moment that suits you. The draw usually takes only a few minutes.

This extended check can be useful further into your journey, for example after several months, or whenever you want to measure your nutrients alongside your metabolic values.

If you prefer a more compact interim check, a shorter panel may fit better. Some people alternate a broad and a compact measurement during their journey.

Your results appear with a reference range for each marker. Values outside that range, including for vitamins, are worth discussing with a doctor, who can place them in context.

A single value outside the range does not immediately point to a problem. It is about the overall picture and the change over time.

Your results are usually in your personal dashboard within 2 working days of the blood draw, with the measured values next to the reference ranges. You view them whenever it suits you.

Every blood test result includes a professional assessment from a BIG-registered doctor. For treatment decisions, discuss your results with your GP.