GDF-15 (Growth Differentiation Factor 15)
Growth Differentiation Factor 15 (GDF-15) is a stress-responsive cytokine released by many tissues in response to inflammation, oxidative and mitochondrial stress, and cellular senescence. Circulating GDF-15 rises consistently with age and is one of the strongest single-protein predictors of all-cause mortality, making it an emerging marker of biological aging and cumulative physiological stress.
What It Measures
A circulating stress-response cytokine (TGF-beta superfamily) reflecting systemic inflammation, mitochondrial/oxidative stress and cellular senescence burden.
Optimal vs. Lab Range
Target range for optimal health and longevity based on research.
Population-based reference range from standard labs.
Why It Matters
GDF-15 is an emerging, well-replicated biomarker of biological aging. In long-term prospective cohorts it predicts all-cause mortality, often adding information beyond established markers such as hs-CRP and NT-proBNP, and recent analyses link genetically and epigenetically predicted GDF-15 to mortality in older adults. Levels rise with age and across many age-related diseases (cardiovascular, metabolic, renal and neurodegenerative), consistent with its role as an integrator of cumulative cellular stress. Because GDF-15 is non-specific and rises with numerous conditions, it is best used as one component of a biological-aging panel and interpreted in context rather than as a stand-alone diagnostic.
When Low
Lower GDF-15 (age-appropriate): lower cumulative stress/aging signal, generally favorable.
When Optimal
Lower, age-appropriate values are favorable; GDF-15 is continuous and interpreted against age and the reporting assay.
When High
Elevated GDF-15: higher inflammatory/mitochondrial-stress burden and higher statistical mortality risk; non-specific — evaluate for cardiovascular, renal, metabolic or other contributors in clinical context.
How to Optimize
There is no GDF-15-specific therapy; the marker is thought to reflect overall inflammatory, metabolic and mitochondrial stress. The evidence-based levers for healthy aging apply: regular physical activity, maintaining healthy body composition, not smoking, good glycemic and blood-pressure control, and treating underlying cardiovascular, renal or metabolic disease. Interpret trends over time on the same assay. This content is educational and not a substitute for medical advice.
Key Interventions & Linked Compounds
Emerging evidenceKey Interventions
Curated from clinical literature. Individual results vary; consult a qualified clinician before changing a protocol.
Ordering Notes
Specimen
Serum/plasma immunoassay (ELISA/ECLIA)
Patient prep
No fasting required. Maintain usual diet and medications unless advised.
Recommended cadence
As part of a biological-aging panel; periodic/longitudinal on the same assay
Reporting unit
pg/mL
Pre-analytic notes
Standardize draw time of day, hydration, and recent exercise. Note any acute illness, supplements, or hormonal therapies on the requisition.
Recommended Follow-Up Actions
- 1
Confirm the result is reliable
Repeat abnormal values before acting — preferably from the same lab, same time of day, and under consistent prep. Rule out acute illness, recent intense exercise, or medication effects that can shift GDF-15 (Growth Differentiation Factor 15).
- 2
Compare against optimal, not just lab range
Use the optimal window above as the target. Lab "normal" is built from the general population and often misses early dysfunction.
- 3
Pair with related markers
Order a complementary panel covering metabolic, inflammatory, and hormonal context to interpret this marker properly.
- 4
Discuss interventions with a clinician
Use the interpretation guidance above to frame the conversation. Bring trends, not just one datapoint, to your visit.
- 5
Re-test on a defined cadence
If a change is implemented, re-measure in 8–12 weeks for fast-moving markers, or 3–6 months for slower ones, to confirm response before escalating.
Testing Information
Recommended Frequency
As part of a biological-aging panel; periodic/longitudinal on the same assay
Fasting Requirement
No fasting required
Available Test Types
Quick Actions
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