At-Home Blood + Diet Assessment
Stop Guessing What “Eat Healthier” Means for Your Body
Measure key inflammation and metabolic biomarkers, see how your overall dietary pattern may be influencing them, and receive personalized steps you can track over the next 90 days.
One-time purchase · No subscription required
Start Your Journey With a FREE DII® Test
Complete a short dietary questionnaire and receive your personalized DII® score. Discover whether your current eating pattern trends more pro-inflammatory or anti-inflammatory—and identify a practical starting point for healthier changes.
No purchase required.
Offer available for a very limited time.
Your Results, Made Actionable
Know what to work on next
OneTest connects objective blood results with your overall dietary pattern, giving you a clearer starting point and practical priorities for the next 90 days.
See what selected biomarkers indicate today.
Understand key results in plain language.
See how your overall diet contributes to your DII® score.
Focus on specific, personalized nutrition changes.
Turn general advice into measurable actions.
Retest and compare results on the same scale.
Know Which Foods May Be Affecting You
Inflammation can build quietly
Chronic low-grade inflammation may develop without obvious warning signs. Nonspecific concerns like these can have many causes and are often difficult to interpret without objective information:
A scale or fitness tracker cannot measure these blood biomarkers or evaluate your complete dietary pattern.
On a GLP-1?
Track More Than Weight Loss
GLP-1 medications can be effective for weight loss, but weight alone does not show the complete picture. Reduced appetite may also make it harder to maintain a balanced dietary pattern. OneTest adds context the scale cannot provide:
Your Results, Made Visual
See your score. See what drives it. Know what to do next.
Your DII® report translates your overall dietary pattern into a clear score, shows which food groups influence it, and highlights practical priorities for the next 90 days.
A lower score indicates a more anti-inflammatory dietary pattern.
See your current intake on a color scale and quickly identify where to maintain progress or improve.
Illustrative sample based on the sample report. Individual scores, food-group findings, and recommendations vary.
A Holistic Approach
See what is happening — and why
OneTest combines two validated assessments so you see the full picture, not fragmented data.
A specially developed panel provides objective information about selected inflammation and metabolic-health markers using an at-home capillary blood collection device.
The validated Dietary Inflammatory Index (DII®) analyzes your overall dietary pattern — not just calories or isolated nutrients — to show how your diet may be influencing inflammation.
Calories and isolated nutrients tell only part of the story. The DII® evaluates the overall dietary pattern, helping you understand which parts of your diet contribute most to a more pro- or anti-inflammatory score.
The Science
A dietary assessment grounded in peer-reviewed research
Developed by researchers at the University of South Carolina, the DII® has been used extensively to study the relationship between dietary patterns and inflammation. OneTest combines this dietary assessment with selected blood biomarkers in one actionable report.
A 90-day cycle gives you a practical period to apply recommendations and compare your results over time. OneTest is intended for educational and wellness purposes; individual results vary.
How It Works
From kit to an actionable plan in four steps
Affordable, Built for the Long Term
Two easy ways to order
Every test includes: the at-home collection kit, laboratory analysis of selected biomarkers, DII® dietary assessment, personalized nutrition priorities, a digital results report, and access to physician support.
At $39 per month, the subscription costs $468 per year for 4 tests, saving $288 compared with purchasing four $189 kits separately. Cancel anytime.
See What You'll Get
Sample reports, before you order
Your inflammation and metabolic markers, explained in plain language with reference ranges.
See Sample ReportSee which parts of your dietary pattern contribute most to your score.
See Sample ReportSee how your results and personalized priorities come together.
See Sample ReportFAQ
Common questions
Is this a diagnostic test?+
No. OneTest for Longevity is intended for educational and wellness purposes and is not a substitute for medical advice, diagnosis, or treatment.
Do I need a doctor to order it?+
No. You can order directly. Telemedicine physician support is available behind every result if you have questions or need clinical guidance.
What if my results are abnormal?+
Your report flags any values outside the typical range, and physician telemedicine support is available to help you understand what they mean and what next steps make sense.
Can I use this while on a GLP-1?+
OneTest may provide useful wellness context during weight loss by tracking selected inflammation, metabolic, and nutritional markers alongside your dietary pattern. It does not directly measure body composition or muscle mass. Discuss your results and any treatment decisions with your healthcare professional.
How is this different from a regular blood panel or a calorie/macro tracker?+
Most trackers focus on activity, calories, or individual nutrients. OneTest combines selected blood biomarkers with a whole-diet inflammatory pattern score, helping you connect objective results with practical nutrition priorities.
Can I cancel my subscription anytime?+
Yes, you can cancel your subscription at any time from your account.