Medically Reviewed5 Specialised Tests to Consider for Your Health Check-Up
An annual health check-up can help identify health concerns early, but no single set of tests suits every healthy adult every year. The right investigations depend on factors such as age, family history, existing medical conditions, medications, lifestyle, previous test results, and current symptoms. Some tests are useful for routine screening, while others are more appropriate when a doctor identifies a specific risk or clinical concern. For example, HbA1c can show longer-term blood glucose levels. Tests such as vitamin B12, vitamin D, thyroid hormones, hs-CRP, ApoB, and Lp(a) may be considered in selected situations. The goal of a health check-up is to choose appropriate investigations based on individual health needs.
This blog explains the 5 tests you should consider getting done annually.
At A Glance
- Screening needs vary according to age, risk factors, symptoms, and medical history. There is no universal test package.
- HbA1c helps assess average blood glucose over approximately the previous 2-3 months and may be used to screen for or monitor diabetes and prediabetes when appropriate.
- Vitamin D and B12 testing is generally considered when deficiency is suspected or when specific risk factors or symptoms are present.
- TSH is commonly the initial test for suspected thyroid dysfunction; additional thyroid hormone testing depends on the clinical situation.
1. Hemoglobin A1c (HbA1c)
Fasting blood glucose measures the amount of glucose in the blood at a particular point in time. HbA1c provides different information. HbA1c measures the proportion of haemoglobin that has glucose attached to it. Because red blood cells generally circulate for around three months, HbA1c reflects average blood glucose over approximately the previous 2-3 months [1].
It can be used for the following reasons:
- Screening for prediabetes and diabetes in appropriate adults
- Diagnosing diabetes or prediabetes using established criteria
- Monitoring glucose control in people who already have diabetes
However, HbA1c is not automatically necessary for every healthy adult every year. Its use depends on individual risk and screening recommendations. Certain conditions, including some forms of anaemia and disorders affecting red blood cells, can also affect HbA1c results. A doctor may therefore consider the overall clinical picture when interpreting the test.
2. Vitamin D and Vitamin B12
Vitamin D and vitamin B12 are important nutrients, but routine testing for both is not necessarily required for everyone.
Vitamin D
Vitamin D plays an important role in calcium absorption and bone health [2]. Low vitamin D levels can occur for several reasons, including limited sun exposure, certain dietary patterns, malabsorption, and other medical conditions. Although vitamin D deficiency has been associated with several health conditions, an association does not necessarily mean that low vitamin D directly causes those conditions. Symptoms such as tiredness are also nonspecific and can have many causes.
Vitamin B12
Vitamin B12 supports red blood cell formation and normal neurological function [3]. B12 deficiency can cause megaloblastic anaemia and neurological problems such as numbness, tingling, balance difficulties, or cognitive changes. Testing may be appropriate when symptoms, dietary factors, gastrointestinal conditions, certain medications, or other risk factors raise suspicion of deficiency. Do not automatically add vitamin D or vitamin B12 testing to every annual health package.
3. High-Sensitivity C-Reactive Protein (hs-CRP)
hs-CRP is a blood test that measures very small increases in C-reactive protein, a marker associated with inflammation. It does not measure inflammation specifically inside the walls of the arteries, and it cannot determine whether cholesterol is “causing damage” to blood vessels. Inflammation is one component of cardiovascular disease, and hs-CRP may provide additional information about cardiovascular risk in selected individuals. However, interpret results alongside established risk factors such as age, blood pressure, cholesterol levels, diabetes, smoking, and medical history.
A raised hs-CRP can also occur because of infection, injury, or other inflammatory conditions. Therefore, a single elevated result does not automatically indicate cardiovascular disease. For these reasons, hs-CRP is not a universal annual heart-screening test for every healthy adult.
4. Advanced Lipid Testing: ApoB and Lp(a)
A standard lipid profile commonly measures the following parameters:
- Total cholesterol
- LDL cholesterol
- HDL cholesterol
- Triglycerides
Additional markers such as Apolipoprotein B (ApoB) and Lipoprotein(a), or Lp(a) can provide additional information in selected patients.
ApoB
ApoB is a protein found on several atherogenic lipoprotein particles. Measuring ApoB can therefore indicate the number of circulating atherogenic particles. It may be particularly useful when cardiovascular risk needs further assessment or when standard lipid measurements do not provide the complete picture [5].
Lipoprotein(a)
Lp(a) is a largely genetically determined lipoprotein associated with increased cardiovascular risk.
Unlike standard cholesterol measurements, Lp(a) is not routinely included in every basic lipid profile.
Testing may be particularly relevant when there is:
- A personal history of premature cardiovascular disease
- A strong family history of premature cardiovascular disease
- Certain unexplained cardiovascular risk patterns
- A need for more detailed cardiovascular risk assessment
However, ApoB and Lp(a) are not automatically required every year for all healthy adults.
5. Thyroid Testing: When Is a Full Profile Needed?
Symptoms, examination findings, medical history, and the clinical question being investigated should guide thyroid testing. TSH (thyroid-stimulating hormone) is commonly used as the initial blood test when thyroid dysfunction is suspected. Depending on the result and clinical situation, a doctor may request free T4 and, in selected circumstances, other thyroid tests. It is therefore not accurate to assume that everyone with symptoms such as weight change, hair loss, or low mood has a thyroid problem despite a normal TSH. Similarly, a normal TSH should not automatically be explained as the body failing to “convert” thyroid hormones.
Several clinical circumstances can affect thyroid hormone interpretation, and additional testing is generally based on the individual’s presentation. A full T3, T4, and TSH panel is therefore not automatically necessary as an annual screening test for every healthy adult.
Final Thoughts
A health check-up should be about appropriate screening, not simply adding more tests. HbA1c, vitamin D, vitamin B12, hs-CRP, ApoB, Lp(a), and thyroid tests can all provide useful information in the right clinical context. However, none of these investigations should automatically be considered necessary every year for every healthy adult. If you are planning a health check-up, discuss your age, family history, existing conditions, medications, lifestyle, and any symptoms with a healthcare professional. This can help determine which tests are genuinely appropriate for you. Eskag Sanjeevani Hospitals provides health assessment and diagnostic services based on individual clinical requirements. Depending on a patient’s age, health history, symptoms, and risk factors, healthcare professionals may recommend appropriate laboratory investigations or other diagnostic evaluations.
Expert medical content writer with a 3-year background in healthcare communications. Specializing in turning complex evidence into credible health content.
Expertise in clinical assessment, accurate diagnosis, and patient-centred treatment based on established medical guidelines.
References
- Sherwani SI, Khan HA, Ekhzaimy A, Masood A, Sakharkar MK. Significance of HbA1c Test in Diagnosis and Prognosis of Diabetic Patients. Biomark Insights. 2016 Jul 3;11:95-104. doi: 10.4137/BMI.S38440.
- Khazai N, Judd SE, Tangpricha V. Calcium and vitamin D: skeletal and extraskeletal health. Curr Rheumatol Rep. 2008 Apr;10(2):110-7. doi: 10.1007/s11926-008-0020-y.
- National Institutes of Health (2024). Office of dietary supplements – vitamin B12. [online] Nih.gov.
- Singh, B., Patel, B.C. and Goyal, A. (2023). C reactive protein (CRP). [online] National Library of Medicine.
- Behbodikhah J, Ahmed S, Elyasi A, Kasselman LJ, De Leon J, Glass AD, Reiss AB. Apolipoprotein B and Cardiovascular Disease: Biomarker and Potential Therapeutic Target. Metabolites. 2021 Oct 8;11(10):690. doi: 10.3390/metabo11100690.
A regular sugar test only shows your glucose level at the moment of the prick. HbA1c shows your average sugar levels over the last three months.
While most major hospitals offer these, they are often not included in the usual annual check-up. Eskag Sanjeevani provides all the detailed tests and help you to recover faster if an underlying issue is detected.
Generally, you do not need to fast for vitamin tests. However, since they are usually done as part of an annual health check-up that includes blood sugar, you will likely be asked to fast for 8 to12 hours.
For most healthy adults, once a year is sufficient. However, if your results show a borderline deficiency or high inflammation, your doctor might suggest re-testing every 6 months. You can trust Eskag Sanjeevani as we prioritise our patients’ health and requirement.
Yes, because they require more advanced laboratory techniques. However, the cost of early detection is significantly lower than the cost of treating a chronic condition like heart disease or diabetes later on. Eskag Sanjeevani understands this and we provide services which are affordable and cost-effective.