How Often Should You Get a Blood Test?
Your Health Is Always Changing – So Should Your Testing. Blood testing isn’t just for when you feel ill.
It’s one of the most powerful tools in preventative health — helping you catch silent problems early, track your progress, and take full control of your well-being.
At Marylebone Diagnostic Centre, we tailor blood test frequency to your age, risk profile, and lifestyle goals – offering same-day appointments in Baker Street with no GP referral needed.
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General Rule of Thumb
| Category | Suggested Frequency |
| Healthy adults (low risk) | Once per year |
| Adults with family history or medication | Every 6–12 months |
| Hormonal concerns (women & men) | Every 3–6 months |
| Athletes & performance | Quarterly or seasonally |
| Chronic fatigue, weight changes, or new symptoms | Immediate + follow-up in 3 months |
| After treatment or supplements | 6–8 weeks post start |
In Your 20s & 30s – Build Your Baseline
Many people in their 20s feel invincible. But this is the perfect time to establish a health baseline – so you can spot early changes later.
Recommended Tests:
- Full Blood Count
- Vitamin D, B12, Iron
- Hormones (e.g. AMH, testosterone)
- Thyroid Function
- Lipid Profile
- Sexual Health Screen
Frequency: Every 1–2 years if healthy; more often if experiencing fatigue, acne, anxiety, or cycle changes
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In Your 40s – Stress, Hormones & Early Warning Signs
This is a critical decade for preventing metabolic and cardiovascular problems — and for monitoring hormonal shifts.
Recommended Tests:
- HbA1c (blood sugar/diabetes risk)
- Cholesterol & Lipoprotein a
- Liver & Kidney Function
- Inflammatory markers (hsCRP, ESR)
- Cortisol, FSH, LH, oestradiol or testosterone
- PSA for men; AMH or fertility markers for women
Frequency: Annually minimum; every 3–6 months for those with symptoms or family history
In Your 50s & 60s – Proactive Screening Is Vital
Risk of cancer, diabetes, cardiovascular disease, and hormone-related issues increases significantly in this stage of life. Regular screening is non-negotiable.
Recommended Tests:
- Bone Profile & Vitamin D
- Thyroid Function
- PSA (men)
- Oestradiol & FSH (women, menopause support)
- Liver/Kidney/eGFR
- Inflammation and clotting markers
- Cardiac Profile (e.g. troponin, lipids, magnesium)
Frequency: Every 6–12 months; more frequently with treatment or known risks
“I started testing annually at 35. It gave me peace of mind — and helped my doctor catch my thyroid imbalance early. We were able to fix it before symptoms got worse.”
— Adam, 42, Mayfair
“My cholesterol was fine at 40, but by 50 it shot up. I would’ve never known without my yearly test.”
— Sandra, 53, Paddington
When Should You Repeat Blood Tests?
You should re-test sooner if you:
- Started a new treatment (e.g. HRT, supplements, statins)
- Made significant lifestyle changes (e.g. diet, weight loss)
- Had abnormal results in the past
- Experience new or worsening symptoms
- Want to track progress over time (e.g. fatigue, hormones, PCOS)
Get a Blood Test in London Today!
At Marylebone Diagnostic Centre, we offer repeat tracking plans to keep your health data consistent, comparable, and under control.
FAQs – Blood Test Frequency
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