SS-31 Bloodwork Guide: What Labs to Track (2026)
SS-31 bloodwork guide: track lactate, CoQ10, 8-OHdG, and creatinine with optimal ranges and testing timeline.
SS-31 Bloodwork Guide: What to Track and Why
SS-31 (elamipretide) is a mitochondria-targeting tetrapeptide that binds to cardiolipin on the inner mitochondrial membrane. Its mechanism is fundamentally different from healing peptides like BPC-157 or TB-500 — it is not reducing inflammation directly or promoting tissue growth. It is restoring mitochondrial bioenergetics at the organelle level.
This makes bloodwork both more important and more nuanced. You cannot feel your mitochondria working better. You might notice more energy, better exercise recovery, or improved cognitive clarity — but those are subjective and confounded by a dozen other variables. The right lab markers give you objective evidence that mitochondrial function is actually improving.
The Testing Timeline
Baseline (before starting): Run all relevant tests 1-2 weeks before your first dose. Mitochondrial dysfunction markers vary widely between individuals, so your own baseline is the only meaningful reference point.
Mid-protocol check (week 4-6): Retest lactate, CoQ10, and any oxidative stress markers you ran at baseline. Mitochondrial improvements can be subtle and gradual.
Post-protocol (2-4 weeks after finishing): Full retest. This tells you whether improvements persist after stopping SS-31 or whether they were dependent on ongoing administration.
Minimum panel for SS-31: Fasting lactate, CoQ10, CBC, CMP, and lipid panel. Add 8-OHdG or F2-isoprostanes if you want to track oxidative stress directly. Add BNP if cardiac function is a concern.
Biomarkers at a Glance
Click any bar to jump to the full breakdown.
Tier 1: Mitochondrial Function Markers
These markers most directly reflect what SS-31 is designed to do: improve mitochondrial efficiency and energy production.
Fasting Lactate
What it measures: Lactate is produced when cells generate energy without sufficient oxygen (anaerobic metabolism) or when mitochondria cannot keep up with energy demand. Elevated resting lactate suggests mitochondrial inefficiency.
Why it matters for SS-31: If SS-31 is improving mitochondrial electron transport chain function, cells should rely less on anaerobic glycolysis at rest. Fasting lactate is the most accessible and affordable marker of this shift.
How to test: Standard blood draw. Must be fasting. Avoid exercise for 24 hours before testing — even moderate activity elevates lactate.
Coenzyme Q10 (CoQ10)
What it measures: CoQ10 is an essential component of the mitochondrial electron transport chain. It shuttles electrons between Complex I/II and Complex III. Low CoQ10 levels correlate with impaired mitochondrial function.
Why it matters for SS-31: SS-31 works at the cardiolipin level to stabilize the electron transport chain. CoQ10 operates in the same system. Tracking CoQ10 alongside SS-31 use tells you whether the electron transport chain environment is improving holistically, and whether CoQ10 supplementation might be a useful adjunct.
How to test: Blood draw (serum or plasma CoQ10). Available through most standard labs.
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Tier 2: Oxidative Stress Markers
Mitochondria are both the primary source and primary target of reactive oxygen species (ROS). SS-31 reduces mitochondrial ROS production by stabilizing cardiolipin and improving electron transport efficiency. These markers capture that effect.
8-Hydroxy-2'-Deoxyguanosine (8-OHdG)
What it measures: Oxidative DNA damage. When ROS attack DNA, they create 8-OHdG as a byproduct that gets excreted in urine. Higher levels mean more oxidative damage to your DNA.
Why it matters for SS-31: This is one of the most direct markers of whether mitochondrial ROS production is decreasing. If SS-31 is stabilizing the electron transport chain and reducing electron leak, 8-OHdG should trend down.
How to test: Urine test (spot or 24-hour collection). Available through specialty labs. More accessible than some oxidative stress markers.
F2-Isoprostanes
What it measures: Lipid peroxidation — oxidative damage to cell membrane fats. F2-isoprostanes are considered the gold standard biomarker of in vivo oxidative stress.
Why it matters for SS-31: Cardiolipin itself is a lipid in the inner mitochondrial membrane. SS-31 protects cardiolipin from oxidative damage. Reduced F2-isoprostanes suggest less lipid peroxidation systemically, which aligns with SS-31's mechanism.
How to test: Urine or plasma. Requires specialty lab (often sent to research-grade laboratories). More expensive than standard panels.
Glutathione (Reduced/Oxidized Ratio)
What it measures: Your body's master antioxidant system. The ratio of reduced glutathione (GSH) to oxidized glutathione (GSSG) reflects your overall antioxidant capacity. A higher GSH:GSSG ratio means better antioxidant status.
Why it matters for SS-31: When mitochondria produce less ROS, your body consumes less glutathione neutralizing free radicals. The GSH:GSSG ratio should improve — more reduced glutathione available, less being burned fighting oxidative damage.
How to test: Blood test (whole blood or red blood cell glutathione). Available through specialty and functional medicine labs.
Tier 3: Renal and Cardiac Function
SS-31 has been studied extensively in kidney disease and heart failure models. These markers are relevant both for tracking potential benefits and for safety monitoring.
Creatinine and eGFR
What it measures: Kidney filtration efficiency. Creatinine is a waste product filtered by the kidneys. eGFR (estimated glomerular filtration rate) is calculated from creatinine and provides a standardized measure of kidney function.
Why it matters for SS-31: Multiple preclinical studies show SS-31 protecting renal mitochondria and improving kidney function in models of acute and chronic kidney injury. If you have any degree of renal impairment, tracking creatinine and eGFR gives you objective data on whether SS-31 is supporting kidney function.
B-Type Natriuretic Peptide (BNP) / NT-proBNP
What it measures: Cardiac wall stress. BNP rises when the heart is under strain. NT-proBNP is the inactive fragment released alongside BNP and has a longer half-life, making it useful for trending.
Why it matters for SS-31: SS-31 is in clinical trials for heart failure (the EMBRACE and PROGRESS-HF trials evaluated elamipretide in heart failure with reduced ejection fraction). If cardiac function is a concern, BNP/NT-proBNP tracks whether cardiac stress is improving.
Tier 4: General Health Safety Panel
Complete Blood Count (CBC)
Standard safety panel. Checks red and white blood cells, platelets. Establishes immune and hematologic baseline.
Comprehensive Metabolic Panel (CMP)
Covers liver enzymes, kidney function, electrolytes, glucose, and protein levels.
Liver monitoring: Any exogenous compound warrants liver enzyme tracking. Optimal ALT is below 25 U/L.
Lipid Panel
Total cholesterol, LDL, HDL, triglycerides. Mitochondrial function influences lipid metabolism — improved mitochondrial beta-oxidation of fatty acids may reflect in triglyceride levels.
How to Order Labs
- Direct-to-consumer labs: HealthLabs.com offers lactate, CoQ10, CBC, CMP, and lipid panels without a prescription or insurance.
- Specialty markers: 8-OHdG, F2-isoprostanes, and glutathione ratio may require orders through functional medicine or anti-aging practitioners. Labs like Genova Diagnostics and Doctor's Data offer oxidative stress panels.
- Your doctor: Basic markers (CMP, CBC, lipids, creatinine) are routinely covered by insurance as preventive care.
Budget-conscious approach:
- Fasting lactate ($15-30)
- CBC + CMP ($20-40)
- CoQ10 ($30-60)
- Add oxidative stress markers if budget allows ($80-150 each)
Putting It All Together: Sample Protocol
Week -1 (Baseline): Run fasting lactate, CoQ10, CBC, CMP, lipid panel, and any specialty markers (8-OHdG, glutathione ratio). Record subjective energy levels and exercise capacity.
Weeks 1-4 (SS-31 protocol): Track subjective markers daily: energy, exercise recovery, cognitive clarity, sleep quality.
Week 4-6 (Mid-protocol): Retest fasting lactate and CoQ10. If lactate dropped and CoQ10 improved, mitochondrial function is trending in the right direction.
Week 8-12 (Post-protocol): Full retest of all baseline markers. Compare every number to your starting point. Document which markers improved, which stayed flat, and which (if any) worsened.
Related Reading
-
SS-31 Dosing Guide — protocols, cycles, and administration
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Epitalon Dosing Guide — another anti-aging peptide targeting cellular longevity
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BPC-157 Bloodwork Guide — biomarker tracking for the classic healing peptide
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TB-500 Bloodwork Guide — inflammatory and tissue repair markers
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SS-31 Reconstitution Guide — how to mix and store SS-31
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Melanotan-2 Bloodwork Guide — safety monitoring for a melanocortin peptide
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BPC-157 Reconstitution Guide — mixing reference for healing protocols
References
- Szeto, H.H. (2014). First-in-class cardiolipin-protective compound as a therapeutic agent to restore mitochondrial bioenergetics. British Journal of Pharmacology, 171(8), 2029-2050.
- Campbell, M.D., et al. (2020). Mitochondrial protein interaction landscape of SS-31. Proceedings of the National Academy of Sciences, 117(26), 15363-15373. PMID: 32554501
- Zhao, W., et al. (2022). SS-31, a mitochondria-targeting peptide, ameliorates kidney disease. Oxidative Medicine and Cellular Longevity, 2022, 1295509. PMC9192202
- Chavez, J.D., et al. (2025). Elamipretide: A review of its structure, mechanism of action, and therapeutic potential. International Journal of Molecular Sciences, 26(3), 944. PMC11816484
- Birk, A.V., et al. (2013). The mitochondrial-targeted compound SS-31 re-energizes ischemic mitochondria by interacting with cardiolipin. Journal of the American Society of Nephrology, 24(8), 1250-1261.
- Siegel, M.P., et al. (2013). Mitochondrial-targeted peptide rapidly improves mitochondrial energetics and skeletal muscle performance in aged mice. Aging Cell, 12(5), 763-771.
This guide is for educational and informational purposes only. It is not medical advice. SS-31 (elamipretide) is a research compound with ongoing clinical trials but is not yet broadly approved for general human use. The biomarker ranges described here reflect optimization targets used in functional and anti-aging medicine — they are not diagnostic criteria. Lab results should be interpreted by a qualified healthcare provider in the context of your full medical history. The Peptide Catalog is not responsible for medical decisions made based on information presented here. HealthLabs.com links are affiliate links — we may earn a commission at no additional cost to you.