Verbatim response from Perplexity
To get a full picture of your health annually, the core set of blood tests you should request includes a Complete Blood Count (CBC), Comprehensive Metabolic Panel (CMP), Lipid Panel, and Hemoglobin A1c [1][2][3].
Adding a Thyroid Panel (TSH) and Vitamin D test provides a more comprehensive view, though routine Vitamin D testing is increasingly discouraged for asymptomatic adults by some experts like Harvard Health [2][3][14].
Essential Annual Tests (The Core Panel)
| Test | What It Measures | Why It Matters |
|---|---|---|
| Complete Blood Count (CBC) | Red/white blood cells, platelets, hemoglobin, hematocrit | Detects infections, anemia, inflammation, and immune or bone marrow issues [1][6][12]. |
| Comprehensive Metabolic Panel (CMP) | Liver/kidney function, electrolytes (sodium, potassium), calcium, fasting glucose | Reveals organ health, dehydration status, and early signs of diabetes or blood sugar imbalances [1][2][6]. |
| Lipid Panel | HDL (good), LDL (bad), and triglycerides | Assesses cardiovascular risk and risk for heart attack or stroke [1][3][6][12]. |
| Hemoglobin A1c (HbA1c) | Average blood sugar over 3 months | The best indicator for prediabetes, diabetes, and insulin resistance [1][2][3][6]. |
Recommended Additions for a "Full Picture"
| Test | Target Group / Condition | Key Benefit |
|---|---|---|
| Thyroid Panel (TSH) | All adults (especially >35) or those with fatigue | Screens for hypothyroidism or hyperthyroidism, which affect energy and metabolism [2][3][6]. |
| Vitamin D | Optional (discussed below) | Often requested for bone health, but Harvard Health now recommends against routine screening unless you have specific risk factors [2][14]. |
| Testosterone | Men age 30+ | Monitors hormonal health if experiencing low energy or mood changes [3]. |
| PSA (Prostate-Specific Antigen) | Men age 50+ | Screens for prostate issues or cancer [1][3]. |
| Estradiol / FSH / LH | Women with hormonal symptoms | Evaluates reproductive health and menopausal status [3]. |
| High-Sensitivity CRP (hsCRP) | Those concerned about inflammation | Indicates general inflammation, a marker for heart disease risk [4]. |
Important Frequency Guidelines by Age & Risk
Not everyone needs this full panel every year if results are normal. Frequency depends on your age and health status:
- Healthy adults under 40: Comprehensive screening every 3–5 years may be sufficient [13].
- Adults 40–50: Every 2–3 years, or annually if you have risk factors (e.g., obesity, family history) [13].
- Adults over 50: Annually is generally recommended for most people [13].
- Lipid Panel: The CDC suggests healthy adults check cholesterol every 4–6 years, but experts often recommend every 3 years if overweight [5][8].
- A1c: Start at age 45; repeat every 3 years if normal, or annually if you have risk factors like being overweight [5][8].
Recommendation: Start by asking your doctor for the CBC, CMP, Lipid Panel, and A1c. If you have symptoms like fatigue, brain fog, or unexplained weight changes, add the Thyroid Panel. Discuss Vitamin D testing only if you have specific risk factors (e.g., limited sun exposure, osteoporosis), as routine screening is no longer universally recommended [14].