Bloodborne pathogens can survive on surfaces for hours, days, or longer depending on the specific pathogen and environmental conditions. This means blood does not necessarily become harmless once it dries or is no longer visibly noticeable.
Understanding how long bloodborne pathogens on surfaces can remain infectious is especially important after an accident, injury, trauma, or other event involving blood or bodily fluids.
Quick Answer: How Long Can Bloodborne Pathogens Live on Surfaces?
There is no single survival time for all bloodborne pathogens. Different viruses respond differently once outside the human body.
Three of the most commonly discussed bloodborne pathogens are:
- Hepatitis B (HBV): According to the CDC, hepatitis B virus can remain infectious on surfaces for at least seven days.
- Hepatitis C (HCV): Research has shown that hepatitis C can remain infectious on surfaces and equipment for extended periods under certain conditions.
- HIV: HIV does not survive well outside the human body, but blood and bodily fluids should still be handled using appropriate precautions.
Because you cannot determine whether blood contains a pathogen by looking at it, potentially contaminated blood and bodily fluids should be handled carefully.
What Affects How Long Bloodborne Pathogens Survive?
The amount of time a pathogen remains viable outside the body depends on several factors, including:
- The specific virus or microorganism
- Temperature
- Moisture and humidity
- The amount of blood or bodily fluid present
- Exposure to environmental conditions
- The type of surface contaminated
There is no reliable way for a homeowner or property manager to determine whether contaminated blood is safe based solely on how long it has been sitting.
Can Bloodborne Pathogens Survive in Dried Blood?
Yes. The fact that blood has dried does not necessarily mean all pathogens within it have become inactive.
Hepatitis B is particularly important in this context because it can remain infectious on environmental surfaces for at least seven days.
Dried blood can also be difficult to identify, especially if it has reached cracks, seams, grout, flooring, furniture, or other less visible areas.
Does the Type of Surface Matter? What to Know About Bloodborne Pathogens on Surfaces
Yes. Surface type can significantly affect how blood contamination needs to be addressed.
Nonporous surfaces, such as certain countertops, sealed tile, glass, and metal, generally allow blood to remain on the surface where it can be cleaned and disinfected using appropriate procedures.
Porous materials create a different problem. Blood can absorb into:
- Carpet and carpet padding
- Upholstery
- Mattresses
- Unsealed wood
- Drywall
- Subflooring
- Other absorbent building materials
Once blood penetrates a material, cleaning what is visible on top may not reach the full area of contamination.
Cleaning vs. Disinfecting: What’s the Difference?
Cleaning and disinfecting are not the same thing. Cleaning physically removes dirt, blood, bodily fluids, and other material from a surface.
Disinfecting uses an appropriate disinfectant to kill or inactivate microorganisms on a surface.
Effective disinfection also requires following the product’s instructions, including the required contact or dwell time. Simply spraying a disinfectant and immediately wiping it away may not provide the contact time needed for the product to work as intended.
In a significant blood contamination event, both proper cleaning and disinfection may be necessary.
When Does Blood Contamination Require Professional Cleanup?
A small amount of blood from a minor household injury is different from contamination caused by a serious accident or traumatic event.
Professional blood cleanup or biohazard cleanup should be considered when a significant amount of blood is present, blood has penetrated porous materials, the source is unknown, multiple areas are contaminated, or the incident involves a trauma scene, crime scene, or unattended death.
Professional cleanup can also help reduce the risk of accidentally spreading contaminated material into other parts of a property.
Professional Biohazard and Blood Cleanup in Phoenix, AZ
Patriot Bio & Repairs provides 24/7 emergency blood cleanup and biohazard cleanup in Phoenix, Mesa, and surrounding Arizona communities.
Our team follows applicable OSHA, EPA, and IICRC standards when addressing hazardous environments. If blood or bodily fluids have significantly contaminated your property, do not rely on appearance alone to determine whether the area is safe.
Contact Patriot Bio & Repairs for 24/7 professional blood cleanup in Phoenix and Mesa, AZ.
