Blood values and your metabolism
Your blood values make your metabolism visible. Sugar, fats and thyroid all help decide how easily you lose weight. Look up a value below. Each one gives the normal range and what a deviation means.
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ALP (Alkaline Phosphatase)
According to the Cleveland Clinic, what someone eats can affect alkaline phosphatase, an enzyme that in the blood comes mainly from the liver and the bones.
ALT (Alanine Aminotransferase)
ALT (alanine aminotransferase) works as an enzyme in the liver cells, according to the NVKC a protein that helps convert one substance into another.
AST (Aspartate Aminotransferase)
AST is an enzyme in your liver and in your heart and skeletal muscles: a protein that helps cells convert one substance into another.
Active Vitamin B12
Active Vitamin B12 measures the bioavailable B12 your body can use.
Albumin
Albumin levels can decline with age due to changes in liver function and nutrition. Monitoring supports awareness of liver health and nutritional adequacy in later years.
Amylase
Your pancreas and your salivary glands release amylase, an enzyme that, according to the NVKC, the Dutch society for clinical chemistry, aids the digestion of sugars from your diet.
ApoA1 (Apolipoprotein A1)
ApoA1 measures HDL's protective function, which becomes increasingly important for cardiovascular health as you age. Regular monitoring supports heart disease prevention.
ApoB (Apolipoprotein B)
ApoB measures the atherogenic particles that accumulate over a lifetime. Monitoring is essential for managing cardiovascular risk and supporting heart health in later years.
Basic Blood Count
A basic blood count measures three core values in your blood: hemoglobin, white blood cells and platelets. Together they say something about oxygen transport, immune defence and clotting.
Basophils
As one of the five types of white blood cell, basophils take part in allergic reactions, in which they release substances such as histamine.
Bicarbonate
According to MedlinePlus, the body makes carbon dioxide as a waste product of metabolism, turning food into energy, and according to the NVKC its main form is bicarbonate (HCO3-).
Bilirubin (Direct)
According to MedlinePlus, a healthy liver removes most of the bilirubin through the bile ducts, the tubes that carry bile from the liver.
Bilirubin (Indirect)
Indirect bilirubin is the part of your bilirubin that your liver has not yet processed.
Bilirubin (Total)
Bilirubin is a breakdown product of red blood cells that, according to MedlinePlus Genetics, the body can only excrete after an enzyme in the liver cells has attached glucuronic acid to it.
C-Peptide
C-Peptide helps assess pancreatic health and insulin production, which can change with age. Monitoring supports diabetes prevention and metabolic stability in later years.
CRP (C-Reactive Protein)
CRP, in full C-reactive protein, is a protein that the liver makes and releases into the bloodstream, and that according to the NVKC rises sharply within 6 to 8 hours in an inflammation.
Calcium
Your calcium level tells you how much calcium your blood holds in total, measured in mmol/l, and for adults the reference range is 2.18 to 2.55 mmol/l.
Ceruloplasmin
Ceruloplasmin helps transport copper and supports iron metabolism. Monitoring these functions can contribute to healthy ageing and maintaining cognitive well-being.
Chloride
Maintaining proper chloride balance becomes important as kidney function may change with age. Regular testing supports fluid balance and overall metabolic stability.
Cholesterol/HDL Ratio
According to the NVKC, cholesterol comes partly from food and is partly made by the liver; the body uses it for tissues, organs, certain hormones and bile acids.
Complete Blood Count (CBC)
A complete blood count tells you from one tube how many red blood cells, white blood cells and platelets your blood holds and how much haemoglobin you have.
Copper
Copper supports brain health, connective tissue integrity, and iron metabolism — all important aspects of healthy ageing. Regular monitoring helps maintain these vital functions.
Creatinine
According to a 2026 review, every day your body converts about 1 to 2% of its creatine store into creatinine, on average 1 to 2 grams a day in adults.
Cystatin C
Cystatin C is especially valuable for older adults, as it provides accurate kidney function assessment regardless of age-related muscle loss.