Annual blood test after 40: which tests should you request?
After 40, which tests make a useful annual blood panel? Routine tests, add-ons based on your profile, and what France's health insurance reimburses.
7 min - BioSense Team
Health resources
Educational guides on biomarkers, prevention and reading blood test results.
HbA1c: the key marker of prediabetes and diabetes
HbA1c reflects your average blood glucose over two to three months. Prediabetes and diabetes thresholds, the marker's limitations, and what you need to know.
5 min - BioSense Team
Cholesterol, blood glucose, vitamin D: 5 markers from age 50
From age 50, five blood markers deserve an overall reading. Cholesterol, blood glucose, kidney, thyroid, vitamin D: why to read them together.
5 min - BioSense Team
Blood tests and heat: should you postpone in summer?
Heat and dehydration can influence some blood test results. Should you postpone your annual check-up in summer? Practical advice.
4 min - BioSense Team
Blood test reference ranges: is "within range" enough?
Blood test reference ranges are statistical averages built from a sample population. Find out why a "within range" result is not always enough.
5 min - BioSense Team
Persistent fatigue after 40: which biomarkers to explore
Fatigue lasting more than four weeks after 40 can be documented with a blood test. Here are the biomarkers to explore with your doctor.
5 min - BioSense Team
Health check-up: what French social security covers
No mandatory annual check-up in France, but several free programmes exist. Here's what the national health insurance actually reimburses.
6 min - BioSense Team
Chronic stress: what a blood test does and doesn't show
Chronic stress leaves measurable biological traces, but no universal "stress test" exists. Here's what a blood panel genuinely sheds light on.
5 min - BioSense Team
Perimenopause: the biomarkers that change from age 40
From age 40, perimenopause quietly alters several biomarkers. Hormones, cholesterol, blood glucose, thyroid: what's useful to understand.
6 min - BioSense Team
Ferritin: what this marker really reveals about your stores
Ferritin reflects your iron stores, but is never read on its own. Here's what a low or high ferritin can mean, in context.
5 min - BioSense Team
Why the same blood result can mean different things
The same blood test result can mean very different things depending on your age, sex, medical history and lifestyle. A demonstration.
6 min - BioSense Team
Lipid Panel Guide: Cholesterol & Triglycerides Explained
Learn to interpret your lipid panel: HDL, LDL cholesterol, triglycerides. Complete guide to understanding cardiovascular lab tests.
8 min - BioSense Team
Blood Sugar & Diabetes: Complete Lab Guide
Fasting glucose, HbA1c, glucose tolerance test: decode your diabetes screening labs. Practical guide for blood sugar management.
6 min - BioSense Team
Longevity Nutrition: Blue Zones Diet Secrets
Discover centenarian nutrition secrets from blue zones. Longevity science, intermittent fasting, and natural anti-aging strategies.
10 min - BioSense Team
Cancer Prevention: Essential Biomarkers & Screening
Cancer biomarkers, early screening, prevention: PSA, mammography, colonoscopy. Age-specific screening guide for cancer prevention.
12 min - BioSense Team
Micronutrition Lab Tests: Optimize Your Health
Vitamins, minerals, omega-3 testing: interpret labs to personalize nutrition. Complete micronutrition and supplementation guide.
9 min - BioSense Team
Vitamin D 2025: New Guidelines & Optimal Dosing
Vitamin D: new optimal levels, recommended dosing, proven benefits. Updated 2025 guide for immunity and disease prevention.
7 min - BioSense Team
Kidney Function Tests: Creatinine, GFR & Urine
Creatinine, GFR, proteinuria: decode kidney function tests. Complete guide to monitor and protect your kidney health.
8 min - BioSense Team
Thyroid Tests: TSH, T3, T4 & Antibodies Guide
Complete thyroid panel: TSH, free T4, T3, anti-TPO antibodies. Hypothyroid vs hyperthyroid symptoms and natural solutions.
10 min - BioSense Team
Physical Activity and Health: Official Recommendations
Guide based on WHO and official health recommendations for physical activity.
12 min - BioSense Team
Complete Blood Count: Interpreting Your CBC
Detailed guide to understanding the complete blood count and its various parameters.
11 min - BioSense Team
Cardiorespiratory Training: Simple Guide (Zone 2 + VO₂ max)
Practical cardio guide: understand zone 2, progress, set a VO₂ max goal and structure your week according to your level and time. Checklist + common pitfalls.
10 min - BioSense Team
ALT/AST Elevated: Fatty Liver, Causes, FIB-4
Elevated transaminases: common causes, link with metabolic fatty liver, and when to use a simple score like FIB-4.
5 min - BioSense Team
GFR and Creatinine: Understanding and Prevention
GFR (glomerular filtration rate): thresholds, interpretation, and prevention actions (blood pressure, blood sugar, hydration).
4 min - BioSense Team