What Should I
Test Next?
Answer 5 quick questions about your age, health, and goals. Get a personalized, prioritized list of the longevity tests actually worth getting — with costs and what each one reveals.
The Evidence-Based Approach to Longevity Testing
Not all tests are equally useful. Some, like a comprehensive metabolic panel and lipid panel, are routine for most adults. Others are useful only in specific circumstances, and some, such as epigenetic age tests, are research tools. This tool helps you see which tests fit your situation.
What makes this tool different
Unlike testing companies that recommend their own products, this tool is unbiased — IQ Healthspan does not sell tests, partner with labs, or receive referral fees. Recommendations are based on the evidence hierarchy: which tests published guidelines support for your age and sex, and which ones your answers suggest discussing with your clinician.
The testing hierarchy for longevity
For most adults, testing follows a clear order. First come routine labs (CBC, CMP, lipid panel and HbA1c). Next, common add-ons such as ApoB, Lp(a) (usually measured once) and hs-CRP can refine cardiovascular risk. Situational tests, including fasting insulin, homocysteine, vitamin D, thyroid and hormone panels, are most useful when your history or symptoms point to them. Imaging, such as a CAC score or a bone density (DEXA) scan, is guided by age, sex and risk, and fitness testing (VO2 max) adds information that bloodwork cannot. Epigenetic clocks are research tools and are not used to guide routine care.
Method, limits and how to read your result
How it works
Answer questions about your age, sex, history and concerns, and the guide suggests which tests to discuss with your clinician, ordered from routine labs to situational tests and imaging. Suggestions follow published guidelines, such as the 2026 ACC/AHA dyslipidemia guideline (ACC/AHA 2026), and IQ Healthspan does not sell tests or take referral fees.
Limits
The guide cannot know your full medical history, and more testing is not always better: tests without a clear purpose can lead to false alarms and unnecessary follow-up. Your clinician may recommend a different plan.
How to read your result
Treat the list as questions for your next appointment. Start with routine labs and recommended screening; add situational tests only when your history or symptoms point to them.
How often to test
Your clinician sets the interval for routine labs. If you make a significant change, such as starting a medication, a repeat test can show its effect. Imaging is repeated only when the result would change a decision, and Lp(a) usually needs testing only once. The most important principle is consistency: a single snapshot is less informative than a trend over time.