Current, Corrected, and Archived Lab Reports
Check report revisions, replacement notices, and archived copies so you can identify which laboratory document applies to a research material.
- Author
- Peptesa
- Published
- Reading time
- 5 min
- Sources
- 2 cited
This guide covers research documentation. It does not provide medical, diagnostic, therapeutic, or veterinary guidance.
You saved a lab report last month. Today, the supplier links to a file with the same report number and a later issue date. Before replacing your copy, check what the issuer changed, whether the replacement covers the same sample, and which version the issuer says to use.
Start by matching the lot to the report. Then check the document’s history. A later file might correct an error, add information about the original work, or describe a separate test. You need that distinction before comparing its results with the earlier copy.
Separate status from storage
Suppliers and laboratories may use different status labels. The descriptions below are a reading aid, not a universal classification system. Ask the issuer what its labels mean.
| Label you encounter | What to establish |
|---|---|
| Current | Which version the issuer designates for the identified sample and purpose, and whether a later notice changes that designation |
| Corrected or amended | What information changed and how the issuer links the amendment to the earlier report |
| Superseded | Which identified document replaces this version |
| Archived | Why someone retained the copy and whether it still applies to the question you are reviewing |
| Withdrawn | Whether the issuer says to stop relying on the report and whether it has issued a replacement |
An archive can contain a superseded report, a withdrawn report, or a report retained after work ended. The archive location alone does not establish validity. Likewise, a document marked current does not establish the quality of the material or its suitability for a particular project.
Read the amendment notice
European co-operation for Accreditation’s answer on amended test reports explains that changes to an issued report should be identifiable and include the reason where appropriate. It also says amendments to reported results must relate to the item tested, calibrated, or sampled. A customer’s request for a change must preserve the laboratory’s integrity.
That gives you a focused set of questions for the issuer:
- Which earlier report does this amendment address?
- Which fields or conclusions changed?
- Does the change concern the original sample and work, or does the document describe additional testing?
- Should readers use the new document alongside the original or in its place?
Check the notice itself rather than inferring its meaning from a filename such as final-v2.pdf. If the issuer provides a separate amendment sheet, save it with the report it identifies. If the issuer provides a replacement report, keep the replacement relationship visible in your records.
The accreditation body’s answer also notes that an older resolution on reissuance was superseded. It does not limit possible reasons for reissuing reports to the examples in that older resolution. Avoid treating a short list of familiar corrections as an exhaustive rule.
Distinguish the dates
Record each date under its printed label. An issue date concerns the document; a sampling or testing date concerns work on the material. Your download date records when you obtained the file.
For example, a corrected report can have a later issue date while retaining the original testing date. That date pattern alone does not establish that the laboratory tested another sample. Look for the issuer’s explanation and the sample identifiers.
A document’s age also cannot tell you whether the issuer has withdrawn it. Check the issuer’s current record or ask for confirmation if the available files conflict. Use the COA-reading guide to review the analytical fields after you establish the document’s identity and status.
Compare two versions without losing the first
Illustrative example. The identifiers and events below are fictional; they do not describe a Peptesa lot, laboratory or report.
You receive report EX-204, revision 0, for sample EX-S17. A week later, the issuer supplies revision 1 with a notice correcting a transcription error in the sample description. The notice identifies revision 0 as superseded and says the reported analytical results did not change.
Keep both files. In your record, link revision 0 to revision 1 and note the stated correction. Check the sample description against the submission information you hold. If the revised description raises doubt about which sample the laboratory examined, ask the issuer to resolve that doubt before relying on the report.
Now suppose you also receive report EX-219 for sample EX-S22, described as another sample from the same lot. Its later date does not make it a replacement for EX-204. Keep the records distinct unless the issuer explains a replacement relationship. Separate samples can support separate reports even when a supplier associates them with one lot.
Keep an accessible history
WHO’s document-control activity describes updating a document log when a new version appears and retaining a dated, marked copy of a replaced SOP in the archive. That activity concerns laboratory quality-management documents, including procedures. It is not a rule for how long a buyer must retain analytical reports.
For your own report file, use the underlying distinction between the version you rely on and the history you retain. Keep the report ID, sample or lot reference, revision and issue date together. Add the source URL, retrieval date, and any amendment or withdrawal notice. A short note identifying which copy replaces which will help a colleague reconstruct what you knew at the time.
Keep access appropriate to the contents: a report may include customer or sample information that should not appear in a public shared folder. Choose retention periods with the person responsible for your organization’s records; this guide sets no universal deletion schedule.
Resolve conflicting copies with the issuer
If two copies disagree and neither explains the change, send the issuer their report IDs, revisions and issue dates. Ask which document applies, what changed, and whether any earlier conclusion needs review. Describe the discrepancy without assuming misconduct or drawing a conclusion about the material from the document conflict alone.
Peptesa’s planned report library describes its prelaunch documentation approach. No Peptesa lot reports are public yet. This guide explains how to read version history; it does not establish accreditation, compliance or product evidence for Peptesa or another supplier.
Sources
- 45.2 Question on Amendments to Test Reports, ISO/IEC 17025 Clause 7.8.8.1European co-operation for Accreditation · Accessed September 8, 2026
- Write an SOP for Document Control including the Document Retention ListWorld Health Organization, Laboratory Quality Stepwise Implementation tool · Accessed September 8, 2026
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