Quick answer: a certificate of analysis is the lot-specific document that states the test organism, spore population, D-value and survival and kill times for a biological indicator lot. File it with the lot register, not in a purchasing folder, because it is the document that lets a clinic interpret a positive result. Our 24-hour biological indicators ship with lot-level performance data for the clinic file.
What should a certificate of analysis contain?
Six fields matter to a clinic, and each answers a question that comes up during an audit or a failed test. If any is missing, the document is a marketing sheet rather than a certificate.
| Field | What it states | Question it answers |
|---|---|---|
| Lot number | The manufacturing lot | Which units does this document cover |
| Test organism | Species and strain | Is this lot comparable to the last one |
| Spore population | Viable spores per carrier | What challenge was applied |
| D-value | Resistance at a stated temperature | Does the indicator suit our cycle |
| Survival and kill times | Expected response window | How to read a positive result |
| Storage and expiry | Conditions and date | Is the stock still usable |
Where should the certificate be kept?
With the lot register and the spore test log, in the same file, in date order. Clinics that keep certificates in a purchasing binder and results in a monitoring binder end up with two records that cannot be reconciled during an inspection. One file, one index, one lot per line is the arrangement that works.
Ontario clinics should also be clear about the cadence the file must support: in Ontario, the RCDSO requires a biological indicator for each sterilizer on every day it is used — daily monitoring, not weekly. The weekly baseline is the CDC / AAMI ST79 standard in most US states, so documents written for the US market can describe a schedule that does not match a Canadian clinic's obligations.
What should a clinic check when the lot changes?
Three things before the first indicator from a new lot is used: the new certificate is on file, the D-value and population are comparable to the previous lot, and the expiry date leaves enough working life for the pack to be consumed. A lot that arrives with a short expiry is a planning problem, not a compliance one, but the check belongs in the same place.
How does the certificate help when a test is positive?
It converts a panic into a sequence. The first question is whether the indicator or the cycle is at fault; the certificate tells you the declared resistance and the expected response, and the log tells you whether the protocol was followed. Without both, the only available response is to quarantine everything, which is expensive and still does not answer the question.
Where should the file live physically?
One physical folder with the sterilizer records and one digital copy with a dated index. A printable lot and certificate index from our compliance log centre plus the log generator gives the folder a table of contents, which is what turns a two-hour search into a two-minute answer.
Clinics buying across several sites can consolidate indicator volumes through wholesale and multi-site ordering, and the B2B wholesale collection lists the monitoring lines stocked for institutional buyers. A compliance review with our sterilization desk will check whether the file supports the monitoring cadence your province expects. Reselling? become a distributor.
Related reading
- Rapid-Readout Biological Indicators and ISO 11138
- How Long Do Spore Test Strips Incubate in Canada
- Biological Indicator Incubator Cost in Canada
Frequently Asked Questions
What is a certificate of analysis for a biological indicator?
It is the lot-specific document in which the manufacturer declares the test organism, the viable spore population, the D-value and the survival and kill times for that lot. It is what makes a spore test result traceable to a known challenge.
Should the certificate be filed with the spore test log?
Yes. Filing it with the lot register means a positive result can be checked against the declared performance of that exact lot without contacting the supplier.
How often does a clinic need a new certificate?
Every time the lot changes. Certificates are lot-specific, so a new case with a new lot number comes with a new document, even when the product code is unchanged.
What if the supplier cannot provide a certificate?
Ask for the performance data in writing before ordering. A biological indicator without declared population and D-value cannot be used to defend a monitoring record.
CliniEco Medical is a licensed medical device establishment (MDEL #35334).