You go every year. You get your blood drawn. Your doctor says everything looks fine. You leave feeling vaguely reassured. And in many cases, the most important things about your health were never measured.
This is not about blaming your physician, who works within a system designed for 15-minute visits and standardized panels. It is about understanding what a standard annual physical actually checks, what it does not, and where the blind spots are.
What's typically included
A standard annual physical in the US usually includes: blood pressure, weight, a basic physical exam, and a "standard" blood panel. That panel typically contains: total cholesterol, LDL-C (usually calculated, not measured), HDL-C, triglycerides, fasting glucose, basic metabolic panel (sodium, potassium, creatinine, BUN), CBC, and sometimes TSH and liver enzymes.
This is fine as far as it goes. The problem is how far it doesn't go.
The six most important gaps
1. ApoB and Lipoprotein(a) — missing from the lipid panel
Standard panels report LDL-C — a calculated estimate of cholesterol content. They do not measure ApoB (the number of atherogenic particles, recommended by ESC/EAS especially with high triglycerides, diabetes or obesity) or Lipoprotein(a) (an inherited risk factor elevated in about one in five people; ESC/EAS suggests measuring it once in a lifetime). Two people with identical LDL-C can have wildly different actual cardiovascular risk. ApoB and Lp(a) catch what LDL-C misses.
2. Fasting insulin / HOMA-IR — missing from metabolic screening
Standard panels check fasting glucose and sometimes HbA1c. Neither can detect insulin resistance in its early stages — in the Whitehall II study, insulin sensitivity fell steeply years before glucose rose sharply. Fasting insulin, combined with fasting glucose as HOMA-IR, can be an early warning sign. It is cheap but rarely ordered, partly because cut-offs are not standardised and guidelines do not recommend routine use.
3. VO₂max — fitness is never measured
Cardiorespiratory fitness is one of the strongest predictors of all-cause mortality — in a cohort of over 120,000 adults, low fitness carried a higher mortality risk than smoking or diabetes (observational data). No standard annual physical includes a measurement of fitness. Not an estimate, not a questionnaire — an actual measurement. The reference method is VO₂max measured by cardiopulmonary exercise testing (spiroergometry).
4. Body composition — BMI is not enough
BMI tells you nothing about the distribution of fat vs. muscle, and nothing about visceral fat — the metabolically dangerous fat around the organs. A muscular person and an obese person with the same BMI have completely different risk profiles. Body composition analysis (BIA or DEXA) shows the difference.
5. Comprehensive liver assessment — ALT alone isn't enough
Standard panels include ALT, maybe AST and GGT. But many labs' upper limits of "normal" are too high: the American College of Gastroenterology puts healthy ALT at about 29–33 U/L for men and 19–25 U/L for women. A normal ALT does not rule out fatty liver, now called MASLD. For people with diabetes, obesity or other cardiometabolic risk factors, European guidelines (2024) recommend a stepwise fibrosis check: the FIB-4 score first, then elastography if needed.
6. Vitamin D, B12, Ferritin, Magnesium — micronutrients
Deficiencies are common: about 40% of Europeans have vitamin D below 50 nmol/L, and B12 deficiency is frequent in vegans and older adults. Standard panels include none of these. They are cheap to detect and treat — though testing is most useful with risk factors or symptoms (the Endocrine Society advises against routine vitamin D screening in healthy adults).
It's not about ordering more tests
The solution is not to order 100 tests and hope something turns up. That is how overdiagnosis happens. The solution is to order the right tests — the ones with published evidence showing they change outcomes — and to interpret them as a pattern, not as isolated numbers. When discussing your next check-up with your doctor, it is reasonable to ask: Which of these gaps apply to me? For each test, what would we do differently if the result were abnormal? A better check-up is one where every marker has a clear "if abnormal, then what" decision path.
References
- Mach F, et al. 2019 ESC/EAS Guidelines for the management of dyslipidaemias: lipid modification to reduce cardiovascular risk. Eur Heart J. 2020;41(1):111-188.
- Mandsager K, et al. Association of cardiorespiratory fitness with long-term mortality among adults undergoing exercise treadmill testing. JAMA Netw Open. 2018;1(6):e183605.
- Tabák AG, et al. Trajectories of glycaemia, insulin sensitivity, and insulin secretion before diagnosis of type 2 diabetes: an analysis from the Whitehall II study. Lancet. 2009;373(9682):2215-2221.
- Kwo PY, et al. ACG clinical guideline: evaluation of abnormal liver chemistries. Am J Gastroenterol. 2017;112(1):18-35.
- Tacke F, et al. EASL–EASD–EASO Clinical Practice Guidelines on the management of metabolic dysfunction-associated steatotic liver disease (MASLD). J Hepatol. 2024;81(3):492-542.
- Cashman KD, et al. Vitamin D deficiency in Europe: pandemic? Am J Clin Nutr. 2016;103(4):1033-1044.
- Demay MB, et al. Vitamin D for the prevention of disease: an Endocrine Society clinical practice guideline. J Clin Endocrinol Metab. 2024;109(8):1907-1947.
This article is general information and not individual medical advice. Decisions about tests and treatment belong in a conversation with your own physician.