What Blood Tests Should You Get Every Year? A Guide to Preventive Health

When was the last time you had blood work done?

Many people wait until they feel sick, unusually tired, or notice something isn't right before scheduling a healthcare visit. But some conditions, including high cholesterol, prediabetes, and early kidney disease, can develop without obvious symptoms.

Blood testing can be a valuable part of preventive healthcare. It can help identify certain health concerns, monitor existing medical conditions, and guide conversations about your long-term wellness.

At EZ Health & Wellness, serving the San Antonio and Bulverde areas, we believe patients deserve to understand their health-not just receive a report filled with numbers.

But here's something important: Not everyone needs the same blood tests every year.

Your age, medical history, medications, family history, symptoms, and individual risk factors help determine which tests are appropriate.

Let's break down eight common blood tests and what they can tell you about your health.

1. Complete Blood Count (CBC): Understanding Your Blood Cells

A Complete Blood Count, or CBC, measures several important components of your blood.

These include:

• Red blood cells: Carry oxygen throughout your body.
• Hemoglobin and hematocrit: Help assess oxygen-carrying capacity and identify possible anemia.
• White blood cells: Play an important role in your immune system.
• Platelets: Help your blood clot properly.

Why might you need a CBC?

A CBC can help evaluate symptoms such as fatigue, weakness, unusual bruising, or signs of infection. It may also be used to monitor certain medical conditions or medications.

For example, low hemoglobin may indicate anemia, which can have several causes, including iron deficiency, vitamin deficiencies, blood loss, or chronic illness.

A CBC is useful in many clinical situations, but routine annual CBC testing isn't necessary for every healthy adult.

2. Comprehensive Metabolic Panel (CMP): Kidney, Liver, and Metabolic Health

A Comprehensive Metabolic Panel, or CMP, measures 14 different substances in your blood.

It provides information about several important body functions, including:

• Kidney function
• Liver-related enzymes and proteins
• Blood glucose
• Electrolyte balance
• Calcium levels
• Protein and albumin levels

Why is a CMP important?

Your kidneys and liver perform essential functions that help keep your body healthy.

A CMP may help identify abnormalities that require additional evaluation, especially in people with diabetes, high blood pressure, kidney or liver conditions, or certain medication use.

For example, changes in creatinine may raise concerns about kidney function, while elevated liver enzymes may warrant further evaluation.

However, one abnormal result does not automatically mean you have a serious medical condition. Results must be interpreted in context.

3. Lipid Panel: Understanding Your Cholesterol and Heart Health

Heart disease remains a major health concern in the United States.

A lipid panel helps evaluate cholesterol and triglyceride levels, which are important factors in cardiovascular risk.

A standard lipid panel typically includes:

• Total cholesterol: The overall amount of cholesterol in your blood.
• LDL cholesterol: Often called "bad" cholesterol because elevated levels contribute to plaque buildup in arteries.
• HDL cholesterol: Often called "good" cholesterol because it helps transport cholesterol away from tissues.
• Triglycerides: A type of fat in your blood that can be elevated with certain metabolic conditions.

Why does cholesterol testing matter?

High cholesterol frequently causes no noticeable symptoms.

You can feel completely healthy while having elevated LDL cholesterol or triglycerides.

Cholesterol results help your healthcare provider assess cardiovascular risk alongside blood pressure, diabetes status, smoking history, age, and other factors.

The appropriate screening interval depends on your overall risk, prior results, and whether you're receiving treatment.

4. Hemoglobin A1c: Your Average Blood Sugar Over Time

Hemoglobin A1c, commonly called A1c, is a blood test that estimates your average blood glucose over approximately the previous two to three months.

Unlike a single glucose reading, A1c provides a broader picture of blood sugar patterns.

Understanding your A1c results

A diabetes diagnosis generally requires confirmation unless there is unequivocal hyperglycemia.

Why is A1c testing important?

Prediabetes often develops without obvious symptoms.

Identifying elevated blood sugar early can create opportunities for lifestyle changes and appropriate medical treatment.

Factors such as excess body weight, family history, previous gestational diabetes, and certain other risk factors can influence whether screening is appropriate.

A1c isn't the best test for every patient. Conditions affecting red blood cells, including some forms of anemia, can make A1c results less reliable.

5. Thyroid Panel: Could Your Thyroid Be Affecting Your Health?

Your thyroid is a small gland located in your neck that helps regulate metabolism and many other body functions.

Thyroid conditions may affect energy levels, body temperature, bowel habits, heart rate, and weight.

Common symptoms that may prompt thyroid evaluation include:

• Unexplained fatigue
• Unexplained weight changes
• Feeling unusually cold or hot
• Constipation or frequent bowel movements
• Hair thinning
• Palpitations
• Menstrual changes

What does a thyroid panel include?

Thyroid testing often begins with thyroid-stimulating hormone (TSH). Depending on your symptoms and results, your provider may also order free T4, T3, or thyroid antibody testing.

The exact tests included in a thyroid panel vary by laboratory and order.

Does everyone need thyroid testing every year?

Not necessarily. Routine thyroid screening for adults without symptoms or risk factors is not universally recommended.

However, thyroid testing can be valuable when symptoms, medical history, medications, or examination findings suggest a possible thyroid condition.

6. Vitamin D: Supporting Bone and Muscle Health

Vitamin D plays an important role in calcium absorption, bone health, and normal muscle function.

Low vitamin D levels can contribute to problems such as bone weakness and, in severe cases, muscle weakness.

Who might benefit from vitamin D testing?

Testing may be appropriate for people with certain risk factors, such as:

• Osteoporosis or other metabolic bone disorders
• Malabsorption conditions
• Certain kidney or liver diseases
• Other medical circumstances that increase the risk of vitamin D deficiency

Although vitamin D is important, routine vitamin D screening is not recommended for every otherwise healthy adult.

Supplementation and testing should be individualized because excessive vitamin D intake can also be harmful.

7. Vitamin B12: Important for Nerves and Red Blood Cells

Vitamin B12 supports healthy nerve function, DNA production, and red blood cell formation.

Low B12 levels may contribute to symptoms such as:

• Fatigue and weakness
• Numbness or tingling in the hands or feet
• Balance difficulties
• Memory or concentration concerns
• Certain forms of anemia

Who may be at risk for low vitamin B12?

Some people have an increased risk of deficiency, including those who:

• Follow a vegan or strict vegetarian diet
• Have certain gastrointestinal conditions
• Have undergone some types of gastrointestinal surgery
• Take certain medications, including long-term metformin or acid-suppressing therapy
• Have conditions that interfere with B12 absorption

B12 testing can be helpful when symptoms or risk factors suggest a deficiency. It is not automatically needed every year for everyone.

8. Iron Studies: Understanding Iron Deficiency and Anemia

Iron is essential for producing hemoglobin, which helps your red blood cells carry oxygen.

Low iron stores may eventually lead to iron deficiency anemia.

Symptoms may include:

• Fatigue
• Weakness
• Shortness of breath with activity
• Dizziness
• Reduced exercise tolerance
• Restless legs in some individuals

What tests evaluate iron levels?

An iron evaluation may include:

• Serum iron
• Ferritin
• Total iron-binding capacity (TIBC)
• Transferrin saturation

Ferritin is particularly useful because it helps assess the body's stored iron.

Not all iron tests measure the same thing, and a serum iron level alone may not adequately evaluate iron deficiency.

Iron deficiency can result from inadequate intake, poor absorption, or blood loss. In some adults, identifying the underlying cause is just as important as treating the deficiency.

Iron supplements should not be started solely because of fatigue without appropriate evaluation.

Do You Really Need All Eight Blood Tests Every Year?

No-and that's an important distinction.

More testing does not always mean better healthcare.

Ordering unnecessary blood tests can sometimes lead to misleading results, additional expenses, and follow-up procedures that may not provide meaningful benefit.

For some individuals, appropriate preventive care may include cholesterol or diabetes screening at recommended intervals.

For others, symptoms, chronic medical conditions, medications, or family history may justify additional laboratory testing.

The goal should be to order the right tests for the right patient at the right time.

What If Your Blood Work Comes Back Abnormal?

Seeing a result highlighted in red on your laboratory report can be concerning.

But an abnormal result doesn't always indicate a disease.

Laboratory values can be affected by several factors, including hydration, medications, recent illness, exercise, biological variation, and testing methods.

Some abnormalities require prompt follow-up, while others may simply need monitoring or repeat testing.

At EZ Health & Wellness, we believe reviewing results with your healthcare provider is just as important as ordering the tests.

We want patients to understand:

• What their results mean
• Whether an abnormal value is clinically significant
• Whether additional testing is necessary
• What lifestyle or treatment options may help
• When follow-up testing is appropriate

Because receiving a lab report is only part of the process. Understanding what to do with the information is what makes it useful.

Preventive Lab Testing at EZ Health & Wellness

At EZ Health & Wellness, we offer access to a variety of laboratory tests to help patients better understand and manage their health.

Available testing includes:

• Complete Blood Count (CBC)
• Comprehensive Metabolic Panel (CMP)
• Lipid Panel
• Hemoglobin A1c
• Thyroid testing
• Vitamin D
• Vitamin B12
• Iron testing

Testing is selected based on your individual needs, symptoms, medical history, and clinical evaluation.

Through our Direct Primary Care model, we aim to make healthcare more accessible, transparent, and focused on long-term wellness.

Eligible annual laboratory testing is included with our DPC memberships, and additional testing may be available at affordable wholesale pricing.

Our goal isn't simply to order labs. It's to help you understand your results and make informed decisions about your health.

Looking for Blood Work or Preventive Care in San Antonio?

Whether you're due for a preventive visit, managing a chronic condition, or concerned about a specific symptom, laboratory testing may be one piece of your overall health evaluation.

At EZ Health & Wellness, we believe healthcare should be personal, accessible, and centered around you.

Ready to take a more proactive approach to your health?

Contact EZ Health & Wellness to learn more about our Direct Primary Care membership, laboratory testing options, and personalized primary care services.

EZ Health & Wellness

Serving San Antonio, Bulverde, and surrounding communities

Phone: 830-354-5557

Website: https://ezhealthwellness.com

Schedule your free 15-minute consultation to learn how we can help you take charge of your health.

About the Author

Michael Enriquez, MSN, APRN, FNP-BC

Founder & Family Nurse Practitioner | EZ Health & Wellness

Michael Enriquez is a board-certified Family Nurse Practitioner and founder of EZ Health & Wellness, a Direct Primary Care practice serving the San Antonio area.

His clinical experience includes critical care, primary care, and post-acute and long-term care.

Through EZ Health & Wellness, Michael focuses on preventive healthcare, chronic disease management, metabolic health, weight management, and helping patients better understand their laboratory results and treatment options.

His approach emphasizes patient education, individualized care, and building meaningful patient-provider relationships.

EZ Health & Wellness - Making healthcare personal again.

Medical Disclaimer

The information provided in this article is for general educational and informational purposes only and is not intended to provide medical advice, establish a patient-provider relationship, diagnose a medical condition, or replace individualized evaluation and treatment by a qualified healthcare professional. Healthcare needs vary by individual. Always consult an appropriate healthcare professional regarding questions about your health, medications, symptoms, or treatment. If you believe you are experiencing a medical emergency, call 911 or seek emergency medical care.