What Does The Term Opim Stand For

You're reading an OSHA compliance guide, or maybe a hospital orientation packet, and there it is again: OPIM. Four letters. Capitalized like they matter. And they do — but nobody bothers to explain what they actually mean in plain English.

So let's fix that.

OPIM stands for Other Potentially Infectious Materials. It's a regulatory term from OSHA's Bloodborne Pathogens Standard (29 CFR 1910.1030). The short version: it's everything that isn't blood but can still transmit bloodborne pathogens like HIV, hepatitis B, and hepatitis C.

But the list is longer — and weirder — than most people realize.

What Is OPIM

The official definition lives in the standard itself. OPIM includes:

Human body fluids: semen, vaginal secretions, cerebrospinal fluid, synovial fluid, pleural fluid, pericardial fluid, peritoneal fluid, amniotic fluid, saliva in dental procedures, any body fluid visibly contaminated with blood, and all body fluids in situations where it's difficult or impossible to differentiate between body fluids
Any unfixed tissue or organ (other than intact skin) from a human (living or dead)
HIV-containing cell or tissue cultures, organ cultures, and HIV- or HBV-containing culture medium or other solutions
Blood, organs, or other tissues from experimental animals infected with HIV or HBV

That's the regulatory text. Here's what it looks like in practice.

The fluids that count — and the ones that don't

Sweat, tears, urine, feces, vomit, and nasal secretions are not OPIM unless they contain visible blood. Same for saliva — except in dental settings, where it's presumed to be contaminated.

This distinction matters. A lot. Plus, because if you treat every wet surface like it's OPIM, you'll burn through PPE budgets and desensitize your team. If you treat actual OPIM like it's just "gross," people get exposed.

Unfixed tissue — what "unfixed" actually means

"Unfixed" means not preserved with formalin or another fixative. Fresh tissue. Frozen sections. Biopsy specimens before they hit the formalin jar. Once tissue is properly fixed, it's no longer OPIM — but the formalin itself becomes a chemical hazard. Different standard. Different headache.

The animal research piece

If your facility works with non-human primates or other animals experimentally infected with HIV or HBV, their blood and tissues are OPIM. Standard animal blood? Not OPIM. But you still don't want it in your eyes.

Why It Matters / Why People Care

OSHA doesn't make up acronyms for fun. The Bloodborne Pathogens Standard exists because healthcare workers, first responders, lab techs, housekeepers, and others were getting sick — and dying — from occupational exposures.

The exposure numbers tell the story

Before the standard took effect in 1992, an estimated 8,700 healthcare workers contracted hepatitis B annually from occupational exposure. Over 200 died. HIV transmission was rarer but devastating — 58 documented occupational seroconversions by 2001, plus 150 possible cases.

The standard works. Hepatitis B vaccination plus universal precautions plus engineering controls dropped occupational HBV infections by over 95%. But compliance gaps remain — and OPIM confusion is a big one.

It's not just hospitals

Tattoo artists. School nurses. Now, mortuary staff. Here's the thing — body piercers. Anyone who might reasonably anticipate contact with blood or OPIM falls under the standard. Correctional officers. Crime scene cleaners. "Reasonably anticipate" is the key phrase — and OSHA interprets it broadly.

The cost of getting it wrong

Citations for Bloodborne Pathogens violations routinely hit five figures. Willful violations can exceed $150,000 per instance. But the real cost? A sharps injury that leads to months of post-exposure prophylaxis, anxiety, lost work, and sometimes career-ending illness.

How It Works (Identification, Handling, Disposal)

Knowing the definition is step one. Applying it day to day is where the work lives.

Identification — the "is this OPIM?" decision tree

When in doubt, ask three questions:

Is it human in origin? Animal blood/tissue only counts if from experimentally infected research animals.
Is it on the listed fluids list — or visibly bloody? Tears? No. Bloody tears? Yes.
Is it unfixed tissue or a covered culture? Fixed tissue = no. Fresh biopsy = yes.

Post this logic somewhere visible. Laminate it. Put it on the back of the biohazard waste container.

Containerization — red bags, sharps containers, and the "satellite accumulation" trap

OPIM goes in red bags or containers labeled with the biohazard symbol. Also, not the regular trash. Not the red bag. On top of that, sharps — needles, scalpel blades, broken capillary tubes, exposed dental wires — go in puncture-resistant sharps containers. Not the "I'll deal with it later" pile on the counter.

Here's where facilities trip up: satellite accumulation areas. Now, you can have a sharps container at the point of use. But once it's 3/4 full — or at the end of the shift, whichever comes first — it must move to the main accumulation area. Leaving full sharps containers in patient rooms for days? Citation waiting to happen.

PPE — matching the gear to the task

Gloves for any anticipated hand contact. Consider this: gowns, masks, eye protection, or face shields when splashes, spray, or spatter are likely. The standard says "appropriate" PPE — which means you assess the task, not the job title.

Drawing blood? Which means gloves. Cleaning a dialysis machine? Gloves, gown, face shield. Also, processing unfixed tissue in histology? Double gloves, cut-resistant gloves if using a microtome, face protection.

And PPE comes off before leaving the work area. Not in the hallway. Not at the nurses' station. Not in the break room.

Decontamination — the 10-minute rule

Contaminated work surfaces get decontaminated with an EPA-registered tuberculocidal disinfectant (or 1:10 bleach solution) immediately after completion of procedures, when overtly contaminated, and at the end of the work shift.

"Immediately" doesn't mean "when I get around to it." It means before the next patient, the next specimen, the next anything.

For more on this topic, read our article on lithium ion battery manufacturing lead exposure or check out slips trips and falls osha pdf.

Laundry — contaminated vs. soiled

Contaminated laundry (soaked with blood/OPIM) goes in red bags or labeled bags at the point of use. Soiled laundry (just dirty, not infectious) follows normal protocols. No sorting in the hallway. Still, minimal handling. No shaking out. The distinction saves money and prevents exposures.

Common Mistakes / What Most People Get Wrong

I've audited dozens of facilities. These patterns show up every time.

Mistake 1: Treating all body fluids as

OPIM — urine, feces, vomit, sweat, tears, nasal secretions — unless they're visibly bloody. The standard lists specific fluids: semen, vaginal secretions, cerebrospinal fluid, synovial fluid, pleural fluid, pericardial fluid, peritoneal fluid, amniotic fluid, saliva in dental procedures, any body fluid visibly contaminated with blood, and all body fluids in situations where it's difficult or impossible to differentiate between body fluids. That's it. Urine in a catheter bag? Not OPIM. Feces in a bedpan? Not OPIM. But staff bag them in red bags anyway, fill sharps containers with diapers, and wonder why disposal costs are triple what they should be.

Mistake 2: The "universal precautions" relic

People still say "universal precautions." That term died in 1996. Here's the thing — the standard is Standard Precautions — which combines universal precautions with body substance isolation. The difference matters. Universal precautions applied only to blood and certain fluids. Standard precautions apply to all body fluids, excretions, and secretions except sweat — regardless of whether they contain visible blood. Still, if your exposure control plan still says "universal precautions," update it. Inspectors check.

Mistake 3: Annual training that isn't annual — or specific

"Annual" means within 12 months of the previous session. Not "sometime this calendar year." And the training must cover your facility's specific exposure control plan, not a generic video from 2012. The standard requires: epidemiology, modes of transmission, the exposure control plan, recognizing exposure tasks, PPE selection and limitations, hepatitis B vaccine, emergency procedures, post-exposure evaluation, signs and labels, and a Q&A session. If your sign-in sheet is the only documentation, you're not compliant.

Mistake 4: No exposure control plan — or one gathering dust

Every facility with occupational exposure needs a written plan. Accessible to employees. Reviewed and updated annually — with documentation of the review. It must include: exposure determination, methods of compliance, hepatitis B vaccination, post-exposure evaluation, communication of hazards, and recordkeeping. If you can't produce the current version with last year's review signature during an inspection, you don't have one.

Mistake 5: Sharps injury logs that miss the point

The log must include: type and brand of device, department/work area, and explanation of how the injury occurred. Which means "Needlestick — nurse — patient room" fails. "BD Eclipse 21G — ICU — during IV insertion, safety mechanism not activated" works. Now, the goal isn't paperwork. Think about it: it's identifying patterns so you can evaluate safer devices. Which the standard requires you to do annually — and document.

Mistake 6: Hepatitis B vaccination "declination" without the offer

You must offer the vaccine within 10 working days of initial assignment — at no cost, at a reasonable time and place, under a licensed healthcare professional. This leads to the declination form is only valid after a genuine offer. "Here's the form, sign it" during orientation doesn't count. And you must re-offer annually if the employee initially declines but later changes their mind.

Mistake 7: Post-exposure evaluation sent to the wrong place

Source patient testing requires consent (or legal authority). Exposed employee testing requires consent. Both go to a healthcare professional — not the supervisor, not HR, not the infection preventionist's desk drawer.

post-exposure prophylaxis (PEP), and any necessary follow-up. Also, this documentation must be retained for at least 30 years. If your employee’s blood test results are filed in the HR department’s “Medical Records” folder alongside payroll forms, you’re not compliant.

Mistake 8: Sharps disposal containers that aren’t compliant

Sharps containers must be puncture-resistant, leak-resistant, and labeled with a biohazard symbol. They must be placed as close as possible to the site of use and never overfilled. If your container is a repurposed bleach bottle with a handwritten label, or if staff are “topping it off” because the disposal service is delayed, you’re creating a hazard. Containers must be replaced when three-quarters full, and disposal must be documented.

Mistake 9: Bloodborne pathogen exposure incidents not investigated

Every exposure incident must be treated as a learning opportunity. Investigate the root cause: Was the PPE torn? Was the safety mechanism on the sharps device disabled? Was the employee trained on the specific task? Document the investigation, implement corrective actions, and track outcomes. If your last exposure incident report ended with “employee advised to follow up with their doctor,” you’re not meeting the standard.

Mistake 10: Neglecting the “Other Potentially Infectious Materials” (OPIM) category

OPIM includes not just blood but also semen, vaginal secretions, cerebrospinal fluid, and other bodily fluids containing visible blood. If your plan only addresses bloodborne pathogens and ignores procedures for handling semen in a laboratory or amniotic fluid in a delivery room, you’re noncompliant. Update your plan to reflect all OPIM types relevant to your facility.

Mistake 11: Failing to update the exposure control plan after incidents

If an investigation reveals a gap in your procedures—such as a missing sharps container or inadequate PPE—you must revise your plan within 10 working days and retrain affected employees. A plan that hasn’t been updated since the 1990s is as outdated as a fax machine in a digital age.

Mistake 12: Overlooking the importance of recordkeeping

The OSHA Bloodborne Pathogens Standard requires you to maintain records of employee exposure incidents, training, vaccination status, and medical surveillance for at least 30 years. If your records are stored in a shoebox under the desk or digitized but inaccessible during an audit, you’re risking citations. Use a secure, organized system—physical or electronic—that allows instant retrieval.

Conclusion

Compliance with the Bloodborne Pathogens Standard isn’t just about checking boxes; it’s about fostering a culture of safety that protects both employees and patients. Mistakes like outdated plans, inadequate training, or improper documentation may seem minor, but they can lead to serious consequences: legal penalties, compromised patient care, and even preventable infections. By addressing these gaps—updating your exposure control plan, ensuring annual training is specific and documented, and maintaining rigorous recordkeeping—you demonstrate a commitment to excellence and regulatory adherence. Remember, the goal isn’t just to pass an inspection; it’s to create an environment where safety is second nature. Take the time to review your practices, involve your staff in the process, and prioritize continuous improvement. Your diligence today could save lives tomorrow.