What does “proven efficacy” actually mean?
When clean isn’t safe enough
The scale of that responsibility is significant. According to the World Health Organization, 7 in every 100 patients in high-income countries acquire at least one healthcare-associated infection during an acute-care hospital stay. In low- and middle-income countries, the figure rises to 15 in 100*. WHO also reports that effective infection prevention and control measures can prevent up to 70% of healthcare-associated infections.
These figures highlight an important question for every healthcare environment:
When a hygiene product claims to be effective, what evidence is behind that claim?
When “effective” is not enough
In professional hygiene, efficacy should never be taken at face value.
A product may claim to work against bacteria, viruses, fungi, or spores, but the claim needs context. Which microorganisms were tested? Which standard was used? What was the required contact time? Was the product tested under clean laboratory conditions or in the presence of organic matter?
These factors can make a significant difference to how a disinfectant performs in practice.
Healthcare environments are rarely static or perfectly clean. Surfaces are touched repeatedly, exposed to different types of contamination and cleaned under time pressure. A product therefore needs to deliver its intended performance within the practical conditions in which it is being used.
This is why proven efficacy is about more than a percentage printed on a label.
It is about evidence, recognised testing standards, which can be replicated easliy and performance that has relevance to real-world use.
What should proven efficacy look like?
Healthcare professionals are increasingly looking beyond product claims and asking for evidence that demonstrates performance in practice.
Independent testing against recognised European (BS EN/pr EN) as well as ASTM, USP and AFNOR standards provides an important part of that evidence. Different standards assess different types of antimicrobial activity, helping users understand what a product has actually been tested against.
The distinction becomes particularly important when assessing sporicidal efficacy. Testing against spore-forming bacteria does not necessarily demonstrate activity against bacterial spores themselves. Because bacterial spores are considerably more resistant to disinfection than many vegetative bacteria, evidence of true sporicidal activity provides a more meaningful indication of performance against these highly resistant forms.
Contact time is another essential consideration.
NHS England's National Standards of Healthcare Cleanliness 2025 require the use of a disinfectant according to its designated time, which should be adhered to until the treated surface is kept moist for the entire duration of its action.
It is at this point that performance in the laboratory and practical application become two sides of one coin.
Testing that considers practical conditions
At Bioguard, our approach to product development goes beyond simply establishing whether a formulation works.
Our surface disinfectants and Hand & Surface Wiping System is independently verified against a range of European standards, including EN13624, EN14476, EN13704, EN14348 and EN16615. It has also been laboratory-tested under dirty conditions to help assess practical effectiveness. The system provides 99.999% efficacy in 30 seconds and combines cleaning and disinfection in one step.
The gap between laboratory efficacy and practical effectiveness becomes particularly important in busy healthcare environments.
Bioguard ensures that sanitisation and disinfection cover the needs of modern pharmaceutical manufacturing — protecting both the product and the process equipment integrity.
Consider a patient bed rail, treatment trolley or infusion pump that may be touched dozens of times throughout a shift. A disinfectant may achieve excellent laboratory results but require several minutes of wet contact time to perform effectively. In reality, surfaces often dry before that time has elapsed or may be reused quickly by staff and patients. Products that combine rapid efficacy with practical application are therefore more likely to deliver consistent performance in everyday clinical environments.
The purpose of testing is not simply to produce a technical claim. It is to give healthcare professionals greater clarity when selecting hygiene solutions for environments where consistent performance is essential.
Efficacy also depends on how a product is usedEven a well-tested disinfectant cannot replace a well-managed hygiene process.
The correct product needs to be combined with appropriate application, coverage and contact time. Staff also need to understand the manufacturer's instructions and the requirements of their local cleaning and infection-control procedures.
Ultimately, continuous training remains an important part of effective infection prevention. Even when a disinfectant has been tested against recognised standards, correct application and adherence to established protocols are essential to achieving the intended results.
The NHS standards reinforce this process-led approach. They emphasise documented cleaning procedures, staff familiarity with cleaning and disinfecting products, appropriate preparation and the importance of preventing recontamination during cleaning. They also specifically highlight high-frequency touchpoints and the need to clean them more frequently than other surfaces.
The Bioguard approach to proven performance
For over 30 years, Bioguard has focused on developing professional hygiene, cleaning and infection-control solutions for demanding environments.
Our approach brings together efficacy, safety and ease of use, supported by ongoing research and development, independent testing and in-house ISO certified manufacturing at our UK facilities.
From healthcare and laboratories to IVF and other specialist environments, our solutions are developed to support the practical demands of professional hygiene.
Our range includes hand and surface wipes, disinfectant cleaning solutions and professional hand hygiene products, alongside specialist solutions for environments with more specific hygiene requirements.
Our focus has always been on developing products that fit naturally into established cleaning and infection-control procedures while delivering consistent performance.
Proven means more than a claim
For healthcare professionals, choosing a hygiene product should involve more than asking whether it is “effective”.
The better questions are:
What has been tested? How has it been tested? Against which standards? Under what conditions? And can that performance be translated into everyday use?
At Bioguard, we believe these questions matter.
In healthcare settings, where cleaning decisions can directly affect patient outcomes, product claims should be scrutinised just as carefully as clinical decisions. Evidence, recognised standards, and practical performance all have a role to play in selecting the right hygiene solution.
That is what we mean by proven efficacy.
