10 Common Blood Tests Everyone Should Know About

A Blood Test in Hyderabad can help individuals understand different aspects of their health through routine diagnostic investigations. Blood tests help healthcare professionals assess blood cell levels, blood sugar, cholesterol, thyroid hormones, vitamin levels and the functioning of important organs such as the liver and kidneys.

The 10 common blood tests include Complete Blood Count (CBC), Blood Glucose Test, Lipid Profile, Thyroid Function Test, Liver Function Test, Kidney Function Test, Vitamin D Test, Vitamin B12 Test, HbA1c Test and Iron Profile. Each test provides different health information and may be recommended based on an individual’s symptoms, medical history and screening requirements.

Understanding these investigations can help you make informed decisions about routine health checkups and follow the right testing recommendations from your healthcare professional.

Why Are Blood Tests Important for Your Health?

Blood tests provide important information about different processes taking place inside the body. They help healthcare professionals identify possible health concerns, monitor existing conditions and evaluate how the body responds to treatment.

Some important reasons why blood tests are recommended include:

• Early identification of health concerns: Certain blood tests can identify abnormal changes before noticeable symptoms develop.
• Monitoring blood sugar: Glucose and HbA1c tests help assess blood sugar levels and support diabetes management.
• Evaluating organ function: Liver and kidney function tests provide information about how these organs are working.
• Checking nutritional levels: Vitamin D, Vitamin B12 and iron tests help identify certain nutritional deficiencies.
• Assessing cardiovascular risk: A lipid profile measures cholesterol and triglyceride levels, which contribute to cardiovascular risk assessment.
• Monitoring existing conditions: Regular testing may help healthcare professionals evaluate changes in a patient’s health over time.

The tests required vary from person to person. A healthcare professional can recommend appropriate investigations based on individual health needs.

What Are the 10 Most Common Blood Tests?

Here are 10 commonly recommended blood tests, what they measure and the health information they provide.

1. Complete Blood Count (CBC)

A Complete Blood Count (CBC) is a routine blood test that measures different components of blood, including red blood cells, white blood cells, haemoglobin, haematocrit and platelets.

What does a CBC test check?

• Red blood cells and haemoglobin levels.
• White blood cell count.
• Platelet count.
• Certain changes associated with anaemia, infections and other blood-related conditions.

Why is it recommended?

A CBC may be recommended during routine health checkups or when symptoms such as persistent fatigue, weakness or unexplained fever need further evaluation.

2. Blood Glucose Test

A blood glucose test measures the amount of glucose (sugar) present in the blood. It helps evaluate blood sugar levels and is commonly used in diabetes screening and monitoring.

What does a Blood Glucose Test check?

• Current blood sugar levels.
• Possible signs of high or low blood glucose.
• Changes in glucose levels during diabetes management.

Why is it recommended?

Healthcare professionals may recommend this test for people with diabetes risk factors, symptoms associated with abnormal blood sugar or those who need regular glucose monitoring.

Depending on the type of glucose test, fasting may be required.

3. Lipid Profile Test

A Lipid Profile is a blood test that measures different types of fats in the bloodstream. It generally includes total cholesterol, LDL cholesterol, HDL cholesterol and triglycerides.

What does a Lipid Profile check?

• Total cholesterol levels.
• LDL cholesterol, commonly called bad cholesterol.
• HDL cholesterol, commonly called good cholesterol.
• Triglyceride levels.

Why is it recommended?

A lipid profile helps healthcare professionals assess cardiovascular risk along with other factors such as blood pressure, age, lifestyle and medical history.

4. Thyroid Function Test

A Thyroid Function Test evaluates thyroid hormone levels to understand how well the thyroid gland is functioning. Common measurements include Thyroid Stimulating Hormone (TSH), T3 and T4.

What does a Thyroid Function Test check?

• TSH levels.
• T3 and T4 hormone levels.
• Possible signs of an underactive or overactive thyroid.

Why is it recommended?

This test may be recommended when symptoms such as unexplained weight changes, fatigue, hair changes, irregular menstrual cycles or temperature sensitivity require thyroid evaluation.

5. Liver Function Test (LFT)

A Liver Function Test evaluates different substances in the blood, including liver enzymes, bilirubin and proteins. These measurements provide information about liver health and possible liver-related abnormalities.

What does an LFT check?

• Liver enzymes such as ALT and AST.
• Bilirubin levels.
• Albumin and total protein.
• Certain indicators of liver injury or changes in liver function.

Why is it recommended?

An LFT may be recommended when healthcare professionals need to investigate possible liver-related concerns, monitor an existing liver condition or assess the effects of certain medications.

6. Kidney Function Test (KFT)

A Kidney Function Test helps evaluate how effectively the kidneys filter waste products from the blood. Common measurements include serum creatinine, blood urea and estimated Glomerular Filtration Rate (eGFR).

What does a KFT check?

• Creatinine levels.
• Urea levels.
• Estimated kidney filtration rate.
• Certain changes associated with impaired kidney function.

Why is it recommended?

KFTs may be advised for people with diabetes, high blood pressure, known kidney conditions or other risk factors that may affect kidney health.

7. Vitamin D Test

A Vitamin D test generally measures 25-hydroxyvitamin D, the main indicator used to assess vitamin D status in the body.

Vitamin D supports calcium absorption and plays an important role in maintaining healthy bones and muscles.

What does a Vitamin D Test check?

• Vitamin D levels in the blood.
• Possible vitamin D deficiency.
• Vitamin D status in people with certain bone or nutritional concerns.

Why is it recommended?

Healthcare professionals may recommend this test when symptoms, medical history or risk factors suggest a possible vitamin D deficiency.

8. Vitamin B12 Test

A Vitamin B12 test measures the level of vitamin B12 in the blood. This vitamin is essential for red blood cell formation, DNA production and normal nerve function.

What does a Vitamin B12 Test check?

• Vitamin B12 levels.
• Possible vitamin B12 deficiency.
• Nutritional factors associated with certain types of anemia and nerve-related symptoms.

Why is it recommended?

The test may be advised for individuals experiencing persistent fatigue, numbness, tingling sensations or other symptoms that require evaluation for vitamin B12 deficiency.

9. HbA1c Test

The HbA1c test measures the percentage of haemoglobin that has glucose attached to it. It provides an estimate of average blood glucose levels over approximately the previous two to three months.

What does an HbA1c Test check?

• Average blood sugar levels over time.
• Possible diabetes or prediabetes.
• Long-term glucose control in people with diabetes.

Why is it recommended?

Healthcare professionals use HbA1c results to screen for diabetes and monitor blood sugar management. Unlike many fasting glucose tests, HbA1c generally does not require fasting.

10. Iron Profile Test

An Iron Profile evaluates iron levels and related measurements in the blood. Depending on the test panel, it may include serum iron, ferritin, transferrin and Total Iron-Binding Capacity (TIBC).

What does an Iron Profile check?

• Iron levels in the bloodstream.
• Ferritin levels, which reflect stored iron.
• The body’s iron-binding capacity.
• Possible signs of iron deficiency or iron overload.

Why is it recommended?

An iron profile may be recommended when symptoms such as fatigue, weakness or suspected anemia require further investigation.

Which Blood Tests Are Included in a Routine Health Checkup?

A routine health checkup may include different blood investigations depending on the individual’s age, medical history, lifestyle and health risks.

Commonly considered investigations include:

• Complete Blood Count: Evaluates blood cells and haemoglobin levels.
• Blood Glucose Test: Checks current blood sugar levels.
• Lipid Profile: Measures cholesterol and triglycerides.
• Thyroid Function Test: Evaluates thyroid hormone levels.
• Liver Function Test: Provides information about liver-related markers.
• Kidney Function Test: Helps assess kidney filtration indicators.
• HbA1c Test: Evaluates average blood sugar levels over approximately two to three months.

Additional tests, such as Vitamin D, Vitamin B12 and Iron Profile, may be recommended when clinically appropriate.

Not every person needs all these investigations. A suitable health checkup should be selected with guidance from a healthcare professional.

How Should You Prepare Before a Blood Test?

Proper preparation helps ensure that blood samples are collected according to the requirements of each investigation.

Follow these general guidelines before your blood test:

1. Confirm fasting requirements: Some tests require fasting, while others can be performed without it.
2. Follow the laboratory’s instructions: Preparation requirements vary depending on the investigation.
3. Inform about medications: Share details of your prescribed medicines and supplements with your healthcare professional. Do not discontinue medication without medical advice.
4. Stay hydrated: Drink water unless specific instructions advise otherwise.
5. Follow sample collection guidelines: Check the recommended collection time and any other instructions before the test.

Home Sample Collection

Home sample collection offers a convenient way to get blood tests done without travelling to a diagnostic laboratory. It is particularly helpful for elderly individuals, people with mobility difficulties and those who prefer sample collection at home.

Negen Diagnostics also provides home sample collection services, allowing individuals to get their required blood samples collected at their convenience.

Key benefits of home sample collection include:

• Convenience: Get blood samples collected from the comfort of your home.
• Time-saving: Avoid travelling and waiting at a diagnostic centre.
• Suitable for elderly individuals: Makes routine testing easier for people with limited mobility.
• Flexible scheduling: Choose an available collection slot based on your requirements.
• Comfort: Complete the sample collection process in a familiar environment.

Before scheduling an appointment, confirm the availability of your required tests, collection timings and preparation instructions with the diagnostic team.

How to Choose the Best Diagnostic Centre in Hyderabad?

Choosing the Best Diagnostic Centre in Hyderabad involves more than comparing test prices. Patients should consider the range of available investigations, laboratory accreditation, sample handling procedures, reporting options and service availability.

Here are some factors to consider before selecting a diagnostic laboratory:

• Laboratory accreditation: Check the current accreditation certificate and the scope of investigations covered.
• Range of investigations: Confirm whether the laboratory provides the blood tests and specialized investigations you require.
• Testing procedures: Understand the sample collection and handling processes.
• Report access: Check how reports are delivered and the expected turnaround time.
• Service availability: Confirm the applicable collection location and appointment arrangements.

These factors can help individuals make informed decisions when selecting a diagnostic provider for their testing requirements.

Diagnostic Services at Negen Diagnostics

Negen Diagnostics offers diagnostic services across multiple laboratory disciplines, including pathology, biochemistry, microbiology, molecular diagnostics, genetics, genomics and radiology.

Individuals can enquire about the availability of specific blood tests, home sample collection arrangements and reporting timelines before scheduling an investigation.

For more information about diagnostic services and testing options, contact Negen Diagnostics.

Make informed health decisions with appropriate testing and guidance from qualified healthcare professionals.