After I walked through my own labs last week, you had sharp follow-ups — Vascepa versus a mixed omega-3, why my lab screenshots had no reference ranges, which lab company I actually use — so the first half is me answering them. Then I count down my real top 10 tests for catching cardiovascular disease early, from hemoglobin A1c at number 10 up to my number one, which isn't a blood test at all. Watch the countdown and let me know in the comments how many you've already had!
⏱️ CHAPTERS
0:00 The top 10 tests, and why I'm ranking them
0:19 Vascepa (icosapent ethyl): EPA vs. DHA, and why I skip it
1:59 "Where are the units?" Normal vs. optimal ranges
3:14 Methylated B complex for high homocysteine
4:14 Which lab company I actually use 5:07 hs-CRP's day-to-day swing, and the GlycA question
7:20 Top 10!
Order your own labs here:
https://www.ultalabtests.com/partners/lilyjohnstonmd
OR
www.ownyourlabs.com
⚕️ DISCLAIMER This channel is for education, not medical advice. I'm a board-certified vascular surgeon, but I'm not your surgeon, and nothing here replaces a conversation with your own physician. The "optimal" ranges I use are tighter than what a lab flags as normal, and they're the targets I set for myself and my patients — yours may be different. Don't start, stop, or change anything based on a single number without talking to the doctor who knows your whole picture.
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🧬 About Dr. Lily Johnston
Dr. Johnston is a double board-certified vascular and general surgeon in San Diego, specializing in metabolic and cardiovascular prevention. She’s the founder of CorSight Health and a passionate advocate for reimagining how medicine approaches chronic disease.
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