In today’s world, maintaining good health is more important than ever. One of the most effective ways to monitor our health and catch any potential issues early is through regular blood tests. Blood investigations, or blood tests, provide vital information about the functioning of various organs and systems in the body. They can detect diseases, monitor ongoing treatments, and help doctors make important decisions about your health.
In 2025, advances in healthcare and technology are making it easier to access and understand our blood test results. Here are ten blood investigations that should be done by individuals in 2025 to ensure a healthy and long life:
1. Complete Blood Count (CBC)
A Complete Blood Count (CBC) is one of the most common and useful blood tests. It measures the levels of different components in your blood, including red blood cells, white blood cells, platelets, and hemoglobin. This test helps detect a variety of conditions like anemia, infections, and certain cancers. Regular CBC tests are essential to monitor overall health and catch any abnormalities early.
Why It’s Important: A CBC helps doctors understand your overall health and can signal issues like low iron levels, infections, or blood disorders.
2. Lipid Profile (Cholesterol Test)
A lipid profile measures the levels of different types of cholesterol in your blood, including low–density lipoprotein (LDL), high-density lipoprotein (HDL), and triglycerides. High cholesterol levels can lead to heart disease, stroke, and other cardiovascular issues.
Why It’s Important: Checking your lipid levels helps assess your risk for heart disease. Managing cholesterol levels through diet, exercise, or medication can prevent serious health problems.
3. Blood Sugar (Glucose) Test
A blood sugar test measures the amount of glucose (sugar) in your blood. It is the key test for diagnosing diabetes or prediabetes. It can be done in various ways, such as fasting blood sugar tests or an HbA1c test, which shows your average blood sugar level over the past 2 to 3 months.
Why It’s Important: Blood sugar levels that are too high or too low can cause serious health issues like diabetes, kidney damage, or heart problems. Early detection can help you manage or prevent these conditions.
4. Thyroid Function Tests
Thyroid tests measure the levels of thyroid hormones in your blood. These hormones, such as TSH (Thyroid Stimulating Hormone), T3, and T4, regulate your metabolism, energy levels, and overall health. If your thyroid is underactive (hypothyroidism) or overactive (hyperthyroidism), it can lead to weight changes, fatigue, and other symptoms.
Why It’s Important: Thyroid disorders are common and can affect your weight, energy, mood, and heart health. Regular testing can help detect thyroid issues early and ensure proper treatment.
5. Vitamin D Levels
Vitamin D is crucial for bone health, immune function, and mood regulation. A vitamin D test measures the level of vitamin D in your blood. Many people, especially those who live in areas with less sunlight, suffer from vitamin D deficiency.
Why It’s Important: Low vitamin D levels are linked to conditions like osteoporosis, depression, and weakened immunity. Ensuring adequate levels can help keep your bones strong and support overall health.
6. Liver Function Tests (LFT)
Liver function tests (LFTs) check the health of your liver by measuring the levels of enzymes and proteins in your blood, such as ALT, AST, and bilirubin. The liver plays a vital role in detoxifying the body, metabolizing food, and producing important proteins.
Why It’s Important: LFTs can detect liver diseases such as hepatitis, fatty liver, and liver damage caused by alcohol or medication. Regular testing is important for those at risk, including heavy drinkers or people with a family history of liver disease.
7. Kidney Function Tests (Creatinine and Urea)
Kidney function tests measure substances like creatinine and urea in your blood, which can help assess how well your kidneys are working. Your kidneys are responsible for filtering waste and excess fluid from your body.
Why It’s Important: Kidney disease often has no early symptoms, so regular kidney function tests are crucial, especially for people with risk factors such as high blood pressure, diabetes, or a family history of kidney disease.
8. C-Reactive Protein (CRP) Test
The C-Reactive Protein (CRP) test measures the level of inflammation in your body. CRP is a substance produced by the liver in response to inflammation. High levels of CRP can indicate an infection, chronic diseases, or an inflammatory condition like arthritis.
Why It’s Important: Chronic inflammation is linked to heart disease, diabetes, and autoimmune disorders. A CRP test can help identify inflammation early and monitor conditions that cause it, allowing for better management and treatment.
9. Hemoglobin A1c (HbA1c) Test
The HbA1c test measures your average blood sugar levels over the past 2 to 3 months. It is primarily used to diagnose diabetes and prediabetes and to monitor blood sugar control in people already diagnosed with diabetes.
Why It’s Important: Regular HbA1c tests help individuals with diabetes track their blood sugar control and adjust their treatment plans. Even those without diabetes should consider getting this test periodically to assess their risk.
10. Blood Pressure Monitoring
While blood pressure monitoring isn’t technically a blood test, it’s one of the most important health checks that should be done regularly. High blood pressure (hypertension) is a major risk factor for heart disease, stroke, and kidney problems.
Why It’s Important: Regular blood pressure monitoring helps detect early signs of hypertension, allowing individuals to take steps to lower their blood pressure and reduce the risk of heart attack and stroke.
Why Should You Do These Tests Regularly?
Health is something that needs continuous attention. Many diseases and health problems develop gradually, and by the time symptoms appear, they might already be advanced. Regular blood tests allow you to monitor your health in real-time and catch problems before they become serious. Here are some reasons why you should keep up with these tests:
- Early Detection: Blood tests can catch diseases like diabetes, heart disease, and thyroid disorders before symptoms show up, giving you more time to take action.
- Preventive Care: Regular tests help you make lifestyle changes (like diet or exercise) or take medication if necessary to prevent future health issues.
- Managing Chronic Conditions: If you have a condition like diabetes or high blood pressure, regular testing ensures your treatment is working and helps prevent complications.
- Improving Quality of Life: Knowing your health status gives you peace of mind. If something is wrong, you can act quickly to treat or manage it, improving your overall quality of life.
Blood investigations are a crucial part of staying healthy and managing any potential health risks. In 2025, many of these tests are easy to access, and with technology, they are becoming more accurate and affordable. The ten blood tests mentioned above—CBC, lipid profile, blood sugar, thyroid function, vitamin D, liver and kidney tests, CRP, HbA1c, and blood pressure monitoring—are essential for everyone to consider regularly. They can help detect diseases early, monitor existing health conditions, and ensure that your body is functioning as it should.
By staying proactive and getting regular blood tests, you can enjoy better health, make informed decisions, and live a longer, healthier life. Always consult your doctor to determine which tests are right for you based on your age, gender, family history, and risk factors.
