Health Assessment Report
ExamplePerformance panel · 10 biomarkers
Patient details
- Name
- Daan Willems
- Gender
- Male
- Age
- 33 years
- Date of birth
- 17-05-1992
Test details
- Test Date
- 16-06-2026
- Report date
- 19-06-2026
- Location
- Amsterdam Noord
- Laboratory
- Star-SHL
10
Total Markers
8
In Range
2
Needs Attention
Overall Assessment
This is a strong profile. Testosterone, IGF-1, HbA1c and fasting insulin all sit in the upper part of their range or comfortably within it, consistent with steady training and good metabolic conditioning.
Two values need attention: your hsCRP is slightly raised and your ferritin is low. In an athlete at your training volume those two often travel together and are rarely a sign of disease — but they do determine whether you keep progressing or stall.
Key Findings
hsCRP slightly raised (3.9 mg/L)
AttentionAbove the 3.0 limit. In an athlete the most likely explanation is a hard training stimulus in the days before the draw. hsCRP rises after intense exercise and settles within a few days.
Ferritin low (24 µg/L)
AttentionBelow the 30 lower limit. Endurance athletes lose iron through sweat, foot-strike haemolysis and the gut. Below a ferritin of 30, oxygen transport measurably declines even while hemoglobin is still normal.
Metabolic conditioning is excellent
GoodHbA1c 32 mmol/mol and fasting insulin 4.1 mU/L. This combination indicates high insulin sensitivity and is better than the average 33-year-old's.
Testosterone and IGF-1 in the upper part of their range
GoodTestosterone 22.4 nmol/L and IGF-1 28.6 nmol/L. There is no hormonal indication of overtraining or insufficient recovery.
Detailed Analysis
Hormones
NormalTestosterone 22.4 nmol/L and IGF-1 28.6 nmol/L. Both sit in the upper part of their reference range.
This is the pattern you want under heavy training: a falling testosterone or IGF-1 is one of the first hormonal signals of chronically insufficient recovery. There is no sign of that here.
Metabolic
NormalYour HbA1c is 32 mmol/mol, reflecting an average blood glucose over the past two to three months well below the upper limit. Your fasting insulin of 4.1 mU/L is low-normal.
A low HbA1c combined with a low fasting insulin indicates high insulin sensitivity. That is precisely what training acts on.
Inflammation
AttentionYour hsCRP is 3.9 mg/L, above the 3.0 limit. This test measures low-grade inflammation and is sensitive enough to pick up a single hard training session.
A single raised value in an athlete is therefore often training-related. If it stays raised after a few days of rest, it warrants further investigation.
Minerals
AttentionYour ferritin is 24 µg/L, below the lower limit of 30. For the general population 20 is often used as the floor, but 30 applies to endurance athletes because performance starts to suffer below that.
Your hemoglobin of 9.1 mmol/L is still normal. That is the usual picture: the store runs down before transport is affected.
Liver
NormalYour ALT is 41 U/L, just within range. In strength athletes a mildly raised ALT is often of muscle rather than liver origin; a CK measurement distinguishes the two when in doubt.
Recommendations
Repeat hsCRP after three rest days
Schedule the repeat after at least three days without intense training. If the value normalises it was training-related. If it stays above 3.0, discuss it with your GP.
Get ferritin above 40
Raise iron intake through diet and combine it with vitamin C. Do not take an iron supplement without advice: with a normal ferritin, supplementing does more harm than good, and in endurance athletes the cause of the loss is usually investigated first.
Retest after eight to twelve weeks
Ferritin responds slowly. Retest ferritin and hemoglobin after eight to twelve weeks, at a point with a comparable training load to now.
Next Steps
Schedule the hsCRP repeat after a short rest period and the ferritin check in eight to twelve weeks. Keep the training load around the draw comparable, or you will be comparing two different situations.
Contact your GP if the hsCRP stays raised, or if fatigue persists despite a normal ferritin. This report does not replace a consultation.
Your Test Results
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.
Hormones
2What It Measures
Testosterone is the main male sex hormone. It supports muscles, sex drive and energy. Women make it too, in much smaller amounts, in the ovaries and the adrenal glands (small glands on top of the kidneys).
Lifestyle Tips
Test before 10 am after a good night's sleep, and not while you are ill. Testosterone is highest in the morning, so compare only morning results.
What It Measures
IGF-1 is a growth factor made mainly in your liver. It follows your growth hormone, which comes from the pituitary gland, a small gland under your brain.
Lifestyle Tips
Growth hormone, testosterone and peptides raise IGF-1. Tell your GP if you use them.
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.
When Levels Are High
A single high value is usually temporary.
The most common ones:
- A cold, flu or other infection in the last few weeks.
- An injury or hard exercise.
- Overweight or smoking. These keep the value a little raised.
Less common:
- A long-term inflammatory disease, such as rheumatoid arthritis or an inflammation of the bowel.
What should you do?
- You were ill recently: have it tested again once you have been well for 2 weeks.
- It stays raised: discuss your risk of heart and blood vessel disease with your GP. They also look at your cholesterol, blood pressure and smoking.
- You have fever, joint pain or weight loss without a reason: make an appointment with your GP.
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
2What It Measures
HbA1c shows your average blood sugar over the past 2 to 3 months. Sugar sticks to your red blood cells, and this test measures how much has stuck.
Lifestyle Tips
You don't need to fast for this test. Losing some weight and moving more every day lowers HbA1c within a few months.
What It Measures
Insulin is a hormone from your pancreas, an organ behind your stomach. It helps sugar move from your blood into your cells. This test measures it after a night without food.
Lifestyle Tips
Fast from the evening before and drink only water. A snack or sweet drink raises insulin for hours.
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.
Vitamins
1What 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.
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.
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.