A sterile package should be handled as little as possible, with clean or sterile hands, and opened using a specific flap-by-flap technique that keeps your hands and body away from the contents inside. The goal is simple: nothing unsterile touches the sterile item or the inner surface of its wrapper. Every step, from picking the package up off the shelf to placing its contents on a sterile field, is designed around that single principle.
Hand Hygiene Before You Touch Anything
Before handling any sterile package, wash your hands with soap and water for at least 20 to 30 seconds. If your hands aren’t visibly dirty, an alcohol-based hand rub works as an alternative. This step is non-negotiable even if you plan to wear gloves, because gloves can have microscopic tears or become contaminated during the gloving process itself. Gloves do not replace hand washing.
If you’ll be touching the sterile contents directly, you need sterile gloves, and those gloves should be put on away from the sterile field so you don’t accidentally contaminate it while gloving up. If you’re only handling the outside of a package to present its contents to someone else (a common scenario in surgical settings), clean hands or clean exam gloves are appropriate.
Inspecting the Package Before Opening
Before you open anything, look at the package carefully. You’re checking for three things: physical damage, moisture, and the chemical indicator.
Physical damage means any tear, puncture, or broken seal in the wrapping material. Even a tiny hole compromises sterility because microorganisms can pass through it. Moisture is equally disqualifying. A package that has gotten wet, even if it has since dried, is no longer considered sterile because bacteria travel through wet barrier materials through a process called wicking.
Most sterile packages include a chemical indicator strip, usually visible on the outside. This strip changes color when exposed to the sterilization process (steam, heat, or chemical vapor, depending on the method). A color change tells you the package went through the sterilizer. It does not guarantee the contents are sterile, but an unchanged indicator tells you something went wrong and the package should not be used. Some packages also contain an internal indicator tucked inside the wrapping that you’ll see when you open it.
How Event-Related Shelf Life Works
Many facilities have moved away from stamping expiration dates on sterilized items. Instead, they follow what’s called event-related shelf life. Under this approach, a properly sterilized and packaged item stays sterile indefinitely, until something happens to compromise it. The “events” that end sterility are straightforward: the seal breaks, the packaging tears, or the package gets wet.
This means a sterile package stored correctly on a shelf for months is still considered safe to use, as long as the packaging is intact and dry. Some facilities still use date-based expiration as an added layer of caution, so check your workplace policy. Either way, your inspection of the package before opening is the final safety check.
The Correct Way to Open a Sterile Package
The opening technique is designed to keep flaps from springing back onto the sterile contents and to keep your arms and clothing from passing over the sterile field. The sequence matters.
Wrapped Packs and Kits
Hold the wrapped package in your non-dominant hand or place it on a clean, dry surface. Open the outermost flap away from your body first. Then unfold each side flap one at a time, tucking them securely under your palm or pressing them flat so they can’t spring back. Finally, open the last flap, the one closest to you, by pulling it toward you. This order ensures you never reach across the exposed sterile contents.
If the pack is large (like a surgical drape pack set on a table), the same sequence applies: far flap first, side flaps next, near flap last. Keep your body back from the table edge, and avoid leaning over the opened field.
Peel Pouches
For smaller items in peel-apart pouches, grip each side of the seal and peel steadily apart. Don’t rip or tear, because jagged edges can shed particles onto the contents. Once open, either let the sterile person grab the item directly, or flip it onto the sterile field by letting it fall from the pouch without your hands crossing over the field. Never slide a sterile item out of its pouch by touching it with unsterile fingers.
Placing Items on the Sterile Field
Once you’ve opened the package, the next risk point is transferring the contents. If you’re adding an item to an existing sterile field, hold the opened package at a distance and let the item drop gently onto the field. Keep a margin of safety: the outer inch of any sterile field (often called the border) is considered non-sterile because it’s close to unsterile surfaces. Items should land in the center of the field.
Never reach across a sterile field with bare or non-sterile arms. If you can’t place an item without crossing over the field, reposition yourself or ask a scrubbed-in team member to take the item from you.
Common Mistakes That Break Sterility
Most contamination doesn’t happen because of dramatic failures. It happens through small, easy-to-miss errors:
- Letting a flap spring back. If an opened wrapper flap falls back onto the contents, the item is contaminated. Tuck flaps firmly as you go.
- Reaching over the sterile field. Your sleeve, arm hair, or skin particles can fall onto the field. Always approach from the side or let items drop from above the edge.
- Using a wet or damaged package. It’s tempting to use a package with a minor-looking crease or small water stain. Don’t. Discard it and open a new one.
- Touching the inside of the wrapper. The inner surface of a sterile wrapper is itself sterile. Your bare or non-sterile gloved hands should only contact the outside.
- Sliding items across surfaces. Dragging a sterile item across a table or countertop, even a clean one, introduces contact contamination. Items should be lifted and placed, not slid.
- Leaving the field unattended. An open sterile field that nobody is watching could be contaminated by air currents, someone walking past, or an item falling onto it. If you can’t confirm it stayed untouched, set up a new field.
Storage and Transport
How you store and move sterile packages affects whether they’re still usable when you need them. Store packages in clean, dry, enclosed areas away from heavy foot traffic. Avoid stacking heavy items on top of sterile packs, as the weight can stress seals or crush packaging material. Keep packages off the floor and away from sinks or other water sources.
When transporting sterile items between rooms or departments, protect them from bumps, drops, and contact with non-clean surfaces. Carry them rather than tossing them into a bin with other supplies. If a package falls on the floor, inspect it thoroughly. Many facilities consider a floor-dropped package compromised regardless of how it looks, because the impact can create micro-tears invisible to the eye.
The underlying rule for every step of sterile package handling is straightforward: if there’s any doubt about whether the package or its contents are still sterile, treat them as contaminated and start fresh. The cost of opening a new package is always less than the cost of an infection.