Smarter Decisions Start with Better Diagnostics

The need to act, and act quickly, is crucial when dealing with an outbreak on a farm. But acting fast does not always mean acting smart. Often the urgency to react when fish health declines can increase costs or result in unnecessary treatment. Diagnostics are increasingly recognized as the most effective way to reduce unnecessary intervention while improving outcomes. At its core, diagnostics are about doing what is needed, when it is needed, and nothing more.

Unnecessary intervention carries real costs. Treatments applied without a confirmed cause can lead to ineffective or redundant use of therapeutics, increased stress on fish stocks, disrupted feeding strategies or growth performance, wasted time and heightened risk of resistance or regulatory scrutiny. In many cases, clinical signs such as reduced appetite, lethargy, or increased mortality are non-specific. Multiple pathogens, environmental stressors, or nutritional factors can produce similar outward symptoms. Without diagnostics, decisions are often based on assumptions which are not always correct. Diagnostics can replace assumptions with evidence.

By confirming the presence, absence, or load of a pathogen, diagnostics can prevent unnecessary treatments when disease is not the primary driver. Equally important, they can provide early warning signals before a situation escalates into a production or welfare crisis. Diagnostics will shift your farm’s approach from reactive to informed decision making.

It’s important to clarify reducing unnecessary intervention does not mean delaying action or avoiding treatment when it’s needed. In fact, diagnostics often enable earlier and more precise intervention. When a real issue is identified quickly, responses can be faster, narrower in scope, and more effective.

The most successful operations don’t treat diagnostics as a last resort. Instead, they integrate them into routine health monitoring and risk management. Over time, diagnostic data builds a clearer picture of baseline health, seasonal trends, and emerging risks. This proactive approach shifts the conversation from “What treatment should we apply?” to “What does the data tell us to do next?”

As aquaculture continues to grow and diversify, the pressure to produce more with fewer inputs will only increase. Diagnostics play a central role in meeting that challenge. By reducing unnecessary intervention, diagnostics helps the industry move toward smarter, more sustainable, and more defensible health decisions.

To keep your farm ready to act with informed decisions, Onda offers subscription diagnostic testing, allowing farmers to keep a pulse on the health of their schools and ahead of any challenges. Regular qPCR tests for testing low levels of pathogens like ISAV or vibrio or water quality testing that flags early risk periods or identify stress conditions can keep your farm protected with evidence-based decisions for health management.