If you manage a long-term care home, a dental clinic, or a community health centre, isolation gowns are one of those items you need to get right—but the market makes it surprisingly easy to get wrong. I've seen homes order Level 4 gowns for routine patient care (overpaying dramatically), and I've seen clinics buy lightweight non-rated coveralls thinking they were getting the same protection.
The AAMI (Association for the Advancement of Medical Instrumentation) PB70 standard classifies isolation gowns into four levels based on liquid barrier performance. Understanding these levels is the key to buying the right gown for your setting—and not a dime more.
AAMI PB70 Levels: What Each Rating Actually Means
Every medical isolation gown sold in Canada and the US is tested to AAMI PB70, which measures how well the gown material resists liquid penetration under increasing pressure. The level you need depends on the procedures performed and the splash risk involved.
| Level | Barrier Performance | Key Test | Typical Use |
|---|---|---|---|
| Level 1 | Minimal barrier | Water penetration (AATCC 42) ≤ 4.5g | Basic care, standard isolation, visitor gowns |
| Level 2 | Low barrier | Impact penetration (AATCC 42) ≤ 1.0g | Blood draw, suturing, ICU, ER |
| Level 3 | Moderate barrier | Hydrostatic pressure (AATCC 127) ≥ 49 cm | Arterial blood draws, ER trauma, intubation |
| Level 4 | High barrier (virus-proof) | Viral penetration (ASTM F1671) — Pass | Surgery, high-infection-risk procedures |
Level 1: When It's the Right Choice
Level 1 gowns provide minimal barrier protection—they're tested for water penetration resistance, not hydrostatic pressure. This sounds limiting, but for the vast majority of clinical interactions, Level 1 is appropriate: routine patient exams, standard isolation precautions, administrative tasks in clinical areas, and visitor gowns.
For a long-term care home where the primary risk is contact transmission during daily care (bathing, dressing, mobility assistance), Level 1 gowns are clinically appropriate and significantly more comfortable for staff who wear them for extended periods.
Our CliniEco Level 1 isolation gowns are AAMI PB70-rated, made from non-woven polypropylene, and designed for single-use. They're also available in a PLA biodegradable version for facilities with sustainability commitments.
Level 2 & 3: When the Risk Goes Up
Level 2 gowns add impact penetration resistance, making them suitable for procedures where fluid splash is possible—blood draws, suturing, wound irrigation. Most emergency departments and ICUs stock Level 2 as their standard gown.
Level 3 gowns add hydrostatic pressure resistance (≥49 cm of water). This is the level you need for arterial blood draws, ER trauma response, and intubation procedures. The material is heavier and less breathable, but the barrier protection is substantially higher.
Level 4: Surgical-Grade Only
Level 4 gowns must pass the ASTM F1671 viral penetration test—essentially, they're virus-proof. These are surgical gowns, designed for operating rooms and high-risk infection scenarios. They cost significantly more, and for most facilities outside of surgical settings, they're unnecessary.
A note from experience: I've seen facilities default to Level 4 "because it's the best." The problem is that Level 4 gowns are heavier, hotter, and more expensive—which means staff are more likely to skip wearing them when they should. The right gown is the one your staff will actually wear consistently.
Cost Comparison for Ontario Facilities
| Product | Price per Box | Gowns per Box | Cost per Gown |
|---|---|---|---|
| CliniEco Level 1 Isolation Gown | $24.99 | 50 | $0.50 |
| CliniEco PLA Biodegradable Level 1 Gown | $28.99 | 50 | $0.58 |
| Typical distributor Level 3-equivalent | $40-$65 | 50 | $0.80-$1.30 |
For a 100-bed LTC home using roughly 300 gowns per day across all shifts, the annual cost at $0.50 per gown is approximately $54,750. At typical distributor pricing of $0.80 per gown, that same home would spend $87,600. The difference—nearly $33,000 per year—goes straight to the bottom line.
Quick Checklist for Your Next Gown Order
- ✅ Confirm the AAMI PB70 level appropriate for your clinical setting (Level 1 for most LTC and routine care)
- ✅ Verify the product has AAMI PB70 certification documentation
- ✅ Check that the gown is the right size for your staff population (standard vs. extended fit)
- ✅ Consider cuff type: thumb-loop cuffs provide better sleeve security during procedures
- ✅ Factor in disposal costs, not just per-gown pricing
- ✅ If sustainability is a priority, evaluate biodegradable PLA options
A Final Thought
The isolation gown market has become a commodity—hundreds of suppliers, competing on price, with widely varying quality. The key to getting it right is not buying the cheapest or the most expensive, but matching the AAMI level to the actual clinical risk. For most LTC homes and outpatient clinics, Level 1 is the right answer. For acute care, Level 2 or 3 is appropriate. Level 4 should be reserved for surgical environments only.
At CliniEco Medical, we keep our gown line simple: Level 1 and Level 1 biodegradable, both AAMI PB70-rated, both stocked in our Toronto warehouse. If your facility needs a different level, we can help source the right product.
CliniEco Medical is an Ontario-owned distributor serving LTC homes, clinics, and healthcare facilities across Canada.