SystemAge 2.1 introduces separate female and male biological age assessments, reflecting growing evidence that aging follows different paths.
Biological age testing has become one of the defining tools of modern longevity medicine, promising to reveal how well the body is really aging beyond the number on a birth certificate. However, until now, most tests have shared one major assumption: that everyone ages in broadly the same way.
Longevity biotech Generation Lab is challenging that idea with the launch of SystemAge 2.1, which it says is the first biological age test to offer separate versions for women and men [1]. The latest update also expands the platform to monitor more aspects of health, including skin, reproductive health and mitochondrial function, while adding a new feature that tracks how different organ systems change over time. Rather than delivering a single biological age score, the platform aims to show where aging is happening inside the body and how that picture evolves as interventions are introduced.
“SystemAge is the fastest-growing preventative health diagnostic in the world – with 750+ clinics in 18 countries and growing,” said Alina Su, CEO and co-founder of Generation Lab. “With SystemAge 2.1, we’re giving clinicians the only test that reflects the science we’ve spent decades proving: that aging is sex-specific, organ-specific and personal. That makes the measurement more useful and the insights more powerful, whether the goal is slowing aging or catching disease before a symptom shows.”
The most notable change in SystemAge 2.1 is its recognition that men and women do not necessarily age in the same way. According to Generation Lab, its research suggests that biological aging follows different timelines and is driven by different processes depending on sex. Despite this, most biological age tests currently rely on a single model for everyone.
The company argues that separating male and female analyses could help clinicians better identify where accelerated aging is occurring and tailor interventions more precisely. Instead of asking whether someone is aging “well” overall, clinicians are becoming more interested in understanding which organs or systems may be aging faster than others.
Another addition is a longitudinal trend view that allows clinicians to compare results across multiple tests. Rather than treating biological age as a one-off snapshot, the feature is designed to reveal whether interventions are changing the pace of aging over months or years. It also allows doctors to monitor how individual organ systems respond to treatments or lifestyle changes.
Generation Lab says the platform can track responses to therapies including NAD+, peptides, stem cell treatments, therapeutic plasma exchange, hormone therapy and lifestyle protocols. Each assessment is also paired with a physician consultation and a personalized longevity protocol based on the individual’s results.
The company says the updated platform analyzes more than 460 biomarkers across 21 organ systems from a needle-free blood sample.
While many biological age tests estimate aging using patterns of DNA methylation, Generation Lab says its platform focuses instead on what it calls “biological noise,” the subtle changes in those patterns that become less stable as people age.
The underlying science has been published in peer-reviewed research, with the company reporting that the approach performs more accurately than several widely used biological age models. For most patients, however, the technical details matter less than the practical outcome. The goal is earlier insight into declining health, ideally before symptoms appear, giving clinicians more time to intervene while changes may still be reversible.
Generation Lab says SystemAge is now used by more than 750 clinics across 18 countries, highlighting how biological age testing is steadily moving from research settings into routine clinical practice. The value of these tests will increasingly depend on whether they lead to better decisions and better outcomes. A biological age score alone offers limited value if it cannot guide meaningful action.
By introducing sex-specific models and focusing on how aging changes over time rather than at a single moment, SystemAge 2.1 reflects the next stage of that evolution. The future of longevity is built on personalized answers, where understanding how each individual ages becomes just as important as measuring how old they are.
