F2-Isoprostane / Creatinine (Urine)
A urinary marker of lipid peroxidation — widely regarded as the gold-standard measure of oxidative stress in the body.
Oxidative stress underlies aging, cardiovascular disease and metabolic dysfunction. Unlike most 'antioxidant status' tests, this one is genuinely validated.
Optimal ranges, root causes, and the complete correction protocol — nutrition, supplements, lifestyle, hormones and peptides — plus 100+ other markers.
Unlock everything — $10/mo →📚 Milne GL et al., Nat Protoc 2007 — F2-isoprostanes as the gold-standard oxidative stress biomarker.
🩸 Test your F2-Isoprostane / Creatinine (Urine)
Order directly through Marek Diagnostics — no doctor's visit needed, drawn at any Quest location in the US. Code CAMERON applies 10% off automatically.
Order this test — 10% off → Browse all 102 markers →What F2-Isoprostane / Creatinine (Urine) is usually tested alongside
On its own, one marker is a data point. These panels include F2-Isoprostane / Creatinine (Urine) plus the markers that make it interpretable — each names every test, why it is on the list, and loads the whole set into your cart in one click at 10% off.
includes this + 9 more markers — Persistent aches, slow recovery, autoimmune history, high cardiovascular risk, or a raised CRP that nobody explained.
includes this + 8 more markers — Joint pain, unexplained rashes, recurring low-grade fevers, profound fatigue, or a family history of autoimmune disease.
What moves your F2-Isoprostane / Creatinine (Urine)
1 compound and 1 supplement in the Vault have a documented effect on this marker, or are a reason to have measured it first:
Browse all 237 compounds & 350 supplements →
Would you feel it? Symptoms F2-Isoprostane / Creatinine (Urine) helps explain
People rarely search for a marker — they search for how they feel. These are the complaints where this marker is worth checking, and whether it is a first-line test or a follow-up once the obvious causes are ruled out.
Why your F2-Isoprostane / Creatinine (Urine) might be wrong
Most abnormal results are interference, not disease. These are the things that measurably move this specific marker — check them before you change anything. Each one says whether the number is wrong and should be repeated, badly timed and should be redrawn, or real with a cause worth explaining.
The analyte is a marker of oxidation and is itself oxidisable — delayed processing or a warm sample raises it artificially.
Use a lab that processes promptly, and do not compare across labs.
Both raise oxidative stress markers genuinely and substantially.
Avoid hard training for 48 hours; note smoking status.
What F2-Isoprostane / Creatinine (Urine) means in combination
A single marker tells you a little. Combinations tell you the story — these are the named patterns this marker takes part in, and what each one points at.
F2-isoprostane is the most reliable oxidative stress measure available. Raised alongside metabolic markers, it is a consequence of the metabolic picture rather than a separate problem to buy antioxidants for.
Antioxidant supplements do not fix this and can blunt training adaptation. Blood sugar control, fat loss, sleep and stopping smoking move it. Fix the driver, retest in 3 months.
What to test next
Markers rarely answer alone. These are the ones that put F2-Isoprostane / Creatinine (Urine) in context — each with its own full breakdown.
Frequently asked questions
Assay dependent; reported per mg creatinine Ranges vary by laboratory and assay — always compare to the range printed on your own report.
Optimal ranges, root causes and the full correction protocol are available inside Coach Cam's Peptide Academy.
See the full breakdown inside the Academy.
See the full breakdown inside the Academy.
You can order F2-Isoprostane / Creatinine (Urine) directly through Marek Diagnostics without a doctor's visit — drawn at any Quest Diagnostics location in the US. Code CAMERON applies 10% off automatically.