Men’s health after 40: choosing blood tests for your risk and symptoms

How lipids, glucose, kidney tests, hormones and PSA are selected after 40. Testing and follow-up depend on risk, symptoms and previous findings.

Published 11 August 20263 min read

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Start with the question, not an annual panel

Cardiovascular and diabetes risk can increase with age, but turning 40 does not mean every man needs the same blood tests every year. Useful testing starts with medical history, family history, symptoms, medicines and existing risk factors. Blood pressure and smoking matter alongside any blood result.

Broad screening of symptom-free adults has not been shown to reduce overall mortality and can produce incidental findings that lead to unnecessary investigation. Targeted risk assessment and monitoring of a known condition answer different questions. A previous result can help, but repeat timing should follow the clinical purpose rather than a fixed annual calendar.

Lipids as part of cardiovascular risk assessment

LDL cholesterol, non-HDL cholesterol and the rest of the lipid profile can support cardiovascular risk assessment. Interpretation also needs age, blood pressure, smoking, diabetes and family history. Treatment targets depend on that overall risk.

ApoB is a protein concentration used as a proxy for atherogenic particle number and can add information in selected situations, including raised triglycerides. Lp(a) is largely inherited and is usually measured once in adulthood, with repeat testing reserved for a clinical reason. hs-CRP can sometimes modify risk assessment, but it is a nonspecific systemic signal and should be measured when well. None of these findings sets a universal annual testing interval.

Glucose and selected liver questions

Fasting glucose and HbA1c can support assessment of diabetes risk or planned diabetes follow-up. A diagnostic result usually needs confirmation; HbA1c also has limitations when red cell lifespan is altered and in some other clinical situations. The reason for testing determines when to repeat it.

Liver tests may be relevant with previous abnormalities, metabolic risk, medicines or other clinical concerns. Normal liver enzymes do not exclude fatty liver or fibrosis. GGT cannot prove alcohol intake. Urate is used for selected gout or stone questions and is not a routine cardiovascular screening target.

Testosterone and thyroid tests when indicated

Testosterone testing is selected for compatible symptoms, such as reduced sexual desire or erectile problems, and an appropriate clinical question. It is not routine screening of men without symptoms. Total testosterone is the starting point; SHBG and sometimes further assessment help with interpretation. Diagnosis requires symptoms and confirmed low values, usually from two fasting morning samples.

TSH is useful when thyroid dysfunction is suspected or treatment needs monitoring. Age alone does not justify an annual TSH test. Tiredness has many possible causes, and a hormone result must be interpreted with symptoms, sleep, medicines and medical history.

PSA is an informed individual decision

PSA can be an initial step in prostate cancer testing. It can also rise with benign enlargement or inflammation, and a normal result does not exclude cancer. Testing may lead to further investigation and detection of cancer that would never have caused problems.

For a person without symptoms, the decision should take account of age, family history, previous PSA, general health and the benefits and harms of testing. Follow regional organised testing invitations or discuss an appropriate plan with a clinician. There is no blanket annual PSA recommendation for every man after 40. New urinary symptoms or a raised result need clinical assessment, with timing determined by the finding.

Kidney, blood count and nutrient tests

Kidney assessment is relevant with risk factors such as diabetes or hypertension, a known condition or a previous abnormal result. Creatinine-based eGFR and urine albumin-to-creatinine ratio answer complementary questions; cystatin C can add information in selected situations. A single abnormal result does not establish chronic kidney disease.

Blood count and ferritin are chosen for an anaemia or iron question, such as symptoms, blood loss or a previous deficiency. Routine vitamin D screening of healthy adults is not recommended simply because of winter. Keep useful previous reports, but choose future tests and their timing from the clinical question. New or persistent symptoms deserve assessment regardless of the last blood result.

This article is general health information, not medical advice and not an assessment of your values. If you have symptoms or concerns, contact your healthcare provider.

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