A positive biological indicator means the cycle did not kill the spores in the test position, so every item in that load is treated as unsterile until it has been reprocessed. The load is quarantined, not restocked; the sterilizer comes out of service until the cause is found; and the whole event is written down with the cycle identifier, the device used and the read time. The 24-hour biological indicators, 50 per pack are the reference point for that daily test in most clinics.
What is the first thing to do when the indicator reads positive?
Stop the load. Anything that has not left the building is quarantined in a labelled bin, and anything that has already gone to a treatment room is retrieved before it is used. The tendency in a busy clinic is to finish the morning list first and deal with the reading at lunch, which is how an unsterile pack ends up on a tray.
Then take the sterilizer out of service. A positive result is a statement about the machine and the cycle, not only about the pack, so running another load before the cause is understood repeats the same risk with less attention on it.
How do you find the cause without guessing?
Work through four candidates in order: operator error, packaging, load configuration, and machine fault. Operator error covers an incorrect cycle selection, an overloaded chamber or a door that was not latched. Packaging covers a pouch that was too tightly packed or a container that trapped air. Load configuration covers a heavy set placed where the steam cannot reach it. Machine fault covers the door gasket, the vacuum pump and the chamber temperature.
The point of the order is that the first three cost nothing to check and account for most events. Jumping to a service call before checking the load configuration is common and expensive.
| Step | Action | Record entry |
|---|---|---|
| 1 | Quarantine the load, retrieve issued items | Cycle id, contents, time found |
| 2 | Take the sterilizer out of service | Time out of service |
| 3 | Check operator, packaging, load, machine | Cause found |
| 4 | Correct and retest three cycles | Retest results and read times |
| 5 | Return to service | Date, responsibility, sign-off |
What do you do with the items that were in the load?
Reprocess them after cleaning, in a load that is configured normally rather than packed to catch up. Items that cannot be reprocessed are discarded. Single-use devices that have been through a failed cycle are not put back into circulation, however expensive the item, because the record now says the cycle failed.
If the load contained an implantable item, the usual practice is to hold it and follow the facility policy for released items rather than deciding at the chair. That is a policy question, not a supply question, and it should be settled before an event rather than during one.
How do you retest and when can the sterilizer go back into service?
Retest with a full cycle containing a biological indicator in the challenge position, after the cause has been corrected. The sterilizer returns to service when three consecutive cycles read negative, unless the facility policy or the service provider specifies a stricter rule.
Record the retest cycles as their own entries rather than reopening the failed one. An auditor reading the log needs to see a failed cycle, a cause, a correction and a series of passes, in that order.
What does the record need to show afterwards?
The failed cycle identifier, the device used, the read time and result, the load contents, the quarantine action, the root cause, the corrective action and the retest results. Anything less and the log shows a blip rather than a managed event.
Keep the record with the routine log rather than in a separate incident file. The next person reading that sterilizer history should not have to know that a second file exists, and the printable log sheet has room for the follow-up entries if the format is consistent.
Related reading
sterilization monitoring collection; what each indicator proves; what ISO 11138 requires of a rapid-readout indicator; wholesale and multi-site ordering Reselling? become a distributor.
Take the paperwork with you: print the sterilization log sheet, pre-fill a week of cycles with the log generator, or ask a sterilization compliance specialist to review how the records line up with the load sheets.
Frequently Asked Questions
Can I use the items from a failed load after they are cleaned again?
Yes for reusable instruments, after cleaning and a normal reprocessing cycle. Single-use items from a failed cycle are discarded.
How many negative cycles before the sterilizer goes back into service?
Three consecutive negative cycles is the usual rule, unless facility policy or the service provider sets a stricter one.
Should the failed load be recorded in the routine log?
Yes. The failed cycle, cause, correction and retests belong in the same log as the routine cycles, not in a separate incident file.
CliniEco Medical is a licensed medical device establishment (MDEL #35334).
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