Health Assessment Report
ExampleComprehensive blood test · 13 biomarkers
Patient details
- Name
- Sanne de Vries
- Gender
- Female
- Age
- 34 years
- Date of birth
- 12-03-1992
Test details
- Test Date
- 18-06-2026
- Report date
- 21-06-2026
- Location
- Amsterdam Zuid
- Laboratory
- Star-SHL
13
Total Markers
10
In Range
3
Needs Attention
Overall Assessment
Your blood test shows a largely healthy picture. Of the thirteen values measured, ten fall within the reference range. Three need attention: your vitamin D and ferritin are low, and your total cholesterol sits just above the upper limit.
None of these findings is worrying. All three respond well to diet, lifestyle and, where needed, supplementation.
Key Findings
Vitamin D low (46 nmol/L)
AttentionBelow the target of 75 nmol/L. This is very common in the Netherlands, particularly between October and April. Fatigue, muscle weakness and reduced immunity are the symptoms most often associated with it.
Ferritin low (18 µg/L)
AttentionYour iron stores are limited while your hemoglobin is still normal. This pattern often precedes anaemia and explains fatigue even before the Hb has dropped.
Cholesterol slightly raised (5.1 mmol/L)
AttentionJust above the 5.0 limit. Your HDL is high and your LDL is normal, so the overall risk profile stays favourable. This value alone does not call for treatment.
Thyroid, liver and kidneys are fine
GoodTSH, ALT and eGFR all sit comfortably within range. There is no indication of a thyroid, liver or kidney problem.
No sign of inflammation
GoodYour hsCRP is 0.8 mg/L. This value is sensitive to low-grade inflammation and is low here, which is favourable for long-term cardiovascular risk.
Detailed Analysis
Vitamins
AttentionYour vitamin D is 46 nmol/L, below the target of 75. Your vitamin B12, at 312 pmol/L, is comfortably sufficient.
Vitamin D is mostly produced in the skin under the influence of sunlight. At Dutch latitudes that is barely possible between October and April, which makes a value like this ordinary in winter and spring. That does not make it unimportant: vitamin D contributes to bone formation, muscle strength and immune function.
Minerals
AttentionYour ferritin is 18 µg/L, just under the lower limit of 20. Ferritin is the storage form of iron, and that store depletes before hemoglobin falls.
That is exactly what we see here: your hemoglobin is still normal (8.4 mmol/L), but the reserve your body draws on is small. Fatigue is a well-recognised symptom of this combination, even without anaemia.
Cardiovascular
AttentionYour total cholesterol is 5.1 mmol/L, just above the 5.0 limit. What matters more than that single number is the composition: your HDL is 1.8 mmol/L (higher is better), your LDL 2.9 mmol/L (under the 3.0 limit) and your triglycerides 0.9 mmol/L (low).
This is a favourable profile. The raised total is largely a consequence of your high HDL, and HDL is protective. Looking at the total alone would give a misleading impression here.
Hematology
NormalYour hemoglobin is 8.4 mmol/L and therefore within range. There is no anaemia. Do note the low ferritin above — it deserves attention precisely because the hemoglobin is still good.
Thyroid
NormalYour TSH is 1.9 mU/L. That sits in the middle of the reference range and is consistent with a normally functioning thyroid. With a TSH in this range, additional free T4 testing is not needed.
Metabolic
NormalYour fasting glucose is 4.9 mmol/L. There is no indication of disturbed glucose metabolism or diabetes.
Inflammation
NormalYour hsCRP is 0.8 mg/L, below the 3.0 limit. This test is more sensitive than standard CRP and is used to detect low-grade inflammation. A low value is favourable.
Liver
NormalYour ALT is 22 U/L, within range. This enzyme is released when liver cells are damaged; a normal value is consistent with a healthy liver.
Kidney
NormalYour eGFR is 96 mL/min/1.73m². This is a calculated measure of how much blood your kidneys filter per minute, and this value is normal for your age.
Recommendations
Supplement vitamin D
Take 25 to 50 micrograms (1000 to 2000 IU) of vitamin D3 daily, with your main meal — vitamin D is fat-soluble and absorbs better that way. Retest after three months to confirm the value is rising.
Rebuild your iron stores through diet
Red meat, lentils, tofu and dark leafy greens are the main sources. Combine them with vitamin C: a glass of orange juice with the meal raises absorption considerably. Tea and coffee do the opposite — leave an hour between them.
Talk to your GP before starting an iron supplement. Too much iron is harmful, and at a ferritin of 18 diet is often enough.
Leave the cholesterol alone
Your profile is favourable enough that a slightly raised total cholesterol needs no action here. Keep your current lifestyle and have it measured again in a year.
Retest after three months
Vitamin D and ferritin respond to supplementation and diet within a few months. A check after three months — vitamin D, ferritin and hemoglobin — will show whether the approach is working.
Next Steps
There is no urgency. Start the vitamin D supplementation and the dietary changes, and have vitamin D, ferritin and hemoglobin measured again after three months.
Contact your GP if the fatigue persists despite this approach, or if new symptoms appear. This report does not replace a consultation.
Your Test Results
Cardiovascular
4What It Measures
Total cholesterol is all the cholesterol in your blood, the favourable HDL and the unfavourable LDL together. Your body needs cholesterol, but too much can clog your blood vessels over the years.
When Levels Are High
A high value is common and causes no complaints. It raises your risk of heart and blood vessel disease over many years.
The most common ones:
- Your genes. High cholesterol often runs in families.
- Eating a lot of saturated fat, such as fatty meat, butter and cheese.
- Overweight or little exercise.
Less common:
- A thyroid that works too slowly.
- Familial hypercholesterolaemia, an inherited condition with very high cholesterol from a young age.
What should you do?
- Your value is only a little high: eat less saturated fat and move more. Your GP can estimate your risk using HDL, blood pressure, smoking and age.
- Your value is very high, or heart disease at a young age runs in your family: make an appointment with your GP.
Lifestyle Tips
You don't need to fast for a cholesterol test.
What It Measures
HDL is the cholesterol that is carried from your blood vessels back to your liver. A higher HDL is linked to a lower risk of heart and vascular disease.
Lifestyle Tips
Stopping smoking, losing belly fat and exercising every week raise HDL and lower your risk. Medicines barely change HDL.
What It Measures
LDL cholesterol is the kind of cholesterol that can build up in the walls of your blood vessels. Over many years this can narrow them and raise your risk of a heart attack or stroke.
Lifestyle Tips
Swap butter and fatty meat for vegetable oil, nuts and fish. Oats and beans help too. You don't need to fast for this test.
What It Measures
Triglycerides are fats in your blood. They come from your food and are also made by your liver, especially from sugar and alcohol.
Lifestyle Tips
Don't eat for 8 to 12 hours before the test and skip alcohol the day before. You can drink water.
Hematology
1What It Measures
Haemoglobin is the protein in your red blood cells that carries oxygen. When it is low, your body gets less oxygen, and you can feel tired or short of breath.
Lifestyle Tips
Drink normally before the draw. If you gave blood recently, wait at least 8 weeks before you test.
Inflammation
1What It Measures
hs-CRP is a very sensitive test for inflammation in your body. It picks up small amounts and is sometimes used to estimate your risk of heart and blood vessel disease.
Lifestyle Tips
Only have this test when you have been well for 2 weeks. Any infection makes the result useless for estimating your heart risk.
Kidney
1What It Measures
The eGFR shows how well your kidneys filter your blood. It is calculated from your creatinine, a waste product from your muscles, together with your age and sex.
Lifestyle Tips
No big meat meal, hard workout or creatine the day before the test. Drink normally.
Liver
1What It Measures
ALT is an enzyme that sits mainly inside your liver cells. When liver cells are damaged, ALT leaks into your blood and your level goes up.
Lifestyle Tips
Don't drink alcohol and don't do heavy exercise in the 3 days before the test. Both can raise ALT for a short time.
Metabolic
1What It Measures
Fasting glucose is the amount of sugar in your blood after a night without food. It shows how well your body keeps your blood sugar under control.
Lifestyle Tips
Eat and drink nothing but water for 8 to 10 hours before the test. No sugar or milk in your coffee or tea.
Minerals
1What It Measures
Ferritin shows how much iron your body has in storage. You need iron to make red blood cells, which carry oxygen through your body.
When Levels Are Low
This means your iron stores are low. It is common and can be treated well.
The most common ones:
- Heavy or long periods.
- Pregnancy, or giving blood regularly.
- Eating little meat, fish or other food with iron.
Less common:
- Blood loss through your bowel, which you often don't notice.
- A bowel disease that makes you absorb less iron, such as coeliac disease.
What should you do?
- You are a man, or a woman after menopause: make an appointment with your GP. They will look for the cause.
- You have heavy periods or give blood: iron tablets usually help. Discuss the dose with your GP.
- You are very tired, short of breath or pale: make an appointment with your GP.
Lifestyle Tips
Take iron tablets with a glass of orange juice, not with tea, coffee or milk. Vitamin C helps your body absorb iron.
Thyroid
1What It Measures
TSH is a signal from a small gland under your brain to your thyroid, a gland in your neck that sets your energy use. A high TSH means your thyroid works too slowly, a low TSH too fast.
Lifestyle Tips
Stop biotin 2 days before the test. If you take thyroid tablets, take them after the blood draw, and test at about the same time of day each time.
Vitamins
2What It Measures
Vitamin D helps your body take up calcium, which keeps your bones and muscles strong. Your skin makes it in sunlight, and you also get it from fatty fish and supplements. This test measures your stored supply.
When Levels Are Low
This is very common in the Netherlands and usually easy to fix.
The most common ones:
- Too little sun. From October to March the sun here is too weak for your skin to make vitamin D.
- Dark skin, or clothing that covers most of your skin.
- Being overweight or older. Older skin makes less vitamin D.
Less common:
- A bowel disease such as coeliac disease or Crohn's disease.
- Medicines for epilepsy, or prednisone used for a long time.
What should you do?
- Your result is a little low and you feel fine: take 10 micrograms of vitamin D every day, or 20 micrograms if you are over 70.
- Your result is very low, or you have bone pain or weak muscles: make an appointment with your GP.
Lifestyle Tips
Vitamin D drops from October to March. Compare your result with one taken in the same season. A March result is usually lower than a September result.
What It Measures
Vitamin B12 is a vitamin your body needs to make red blood cells and keep your nerves healthy. You get it from meat, fish, eggs and dairy.
Lifestyle Tips
Do you use metformin or a stomach acid blocker for years? Ask your GP for a yearly B12 check.
Assessed by a BIG-registered doctor
This report was prepared by a BIG-registered doctor. It does not replace a personal medical consultation. Always consult your general practitioner if you have questions.