Good health begins with accurate diagnosis—this was the principle behind the launch of Apollo’s Digi-Smart Central Reference Laboratory in Chennai. It is a simple idea, but it captures the transformation underway in health care today.
For much of modern medicine, diagnostics played a supporting role, something clinicians turned to after symptoms appeared. That is changing. The real shift in health care is from reacting to disease to anticipating it. Also, recently published findings from India’s health of the nation report underscore the growing importance of preventive diagnostics. Among the most striking insights is that 45 per cent of asymptomatic individuals who underwent coronary calcium scoring already showed signs of calcification.
Advances in diagnostic science are making earlier detection increasingly possible. Liquid biopsies, for instance, illustrate this progress clearly: a routine blood draw can identify fragments of tumour DNA circulating in the body—often before symptoms arise and well before abnormalities appear on conventional imaging.
Genomic testing extends this capability further, enabling clinicians not only to understand what is happening biologically, but also to anticipate what may develop over time based on an individual’s genetic profile. These are no longer distant possibilities—they are already transforming clinical practice and improving survival outcomes.
This shift matters deeply in India, where more than 70 per cent of cancer cases are still diagnosed at advanced stages. That reflects not just the scale of the challenge, but the cost of a system long oriented towards treatment rather than prevention. Early diagnosis improves survival, but it also changes the experience of care itself. It can reduce the need for aggressive intervention, lower the financial burden on families, and preserve quality of life. The case for early detection is therefore both clinical and economic.
India is uniquely positioned to lead this transformation. The country brings together deep clinical expertise, a large and genetically diverse population, and rapidly expanding digital infrastructure. That combination gives India the opportunity not only to adopt global advances, but to help shape what comes next. Earlier, what was once seen as a challenge in standardising care may well become one of India’s greatest scientific strengths.
Change is already underway, and as a case in point, more than 11,000 genomic consultations across our network reflect the growing integration of precision diagnostics into routine clinical care. Likewise, Digi-Smart Central Reference Laboratory marked another important step. Spread across 45,000 square feet, this fully automated facility can process over one lakh samples a day with near-zero manual intervention. It proves that scale and precision do not compete; with the right systems, they strengthen each other. Faster turnaround times mean quicker decisions and better outcomes.
The larger opportunity is systemic. Today, diagnostics has the potential to move from the margins of care to its very centre. Risk-based screening can become a routine part of clinical pathways. Personalised testing can extend far beyond metropolitan centres through India’s expanding digital health ecosystem. Point-of-care technologies can strengthen last-mile access, especially in communities carrying a high burden of non-communicable disease. And, as innovation scales, advanced diagnostics, including whole genome sequencing, will continue to become more accessible and more affordable.
Across the world’s leading health care systems, diagnostics is anchoring a more proactive model of care. India now has the chance to build its own model—one that is technologically advanced, scalable, inclusive, and built for its own realities.
That is what makes this a quiet revolution. It is not loud, but it is transformative. It gives us the chance to find disease earlier, treat it with greater precision, and increasingly prevent it before it takes hold. And that may be one of the most important shifts health care will see in our lifetime.
Dr Preetha Reddy is Executive Vice Chairperson of Apollo Hospitals Enterprise Limited.