# Check timing from first use to diagnosis, and other causes > How to line up first use, last use and diagnosis in a mass tort case in Medrecords AI, and find other documented causes with search, filters and Q&A. Canonical page: https://medrecords.ai/help/case-types/mass-tort/analysis/ --- New — **Missing Records Detection:** flags every visit, provider, and date missing from the file. [See how →](https://medrecords.ai/product/missing-records-identification/) [Home](https://medrecords.ai/) ›[Help](https://medrecords.ai/help/) ›[Mass tort](https://medrecords.ai/help/case-types/mass-tort/) › — Check timing from first use to diagnosis, and other causes MEDRECORDS AI HELP ## Check timing from first use to diagnosis, and other causes To check timing in a mass tort case, use the Medrecords AI timeline to find the first record of use, the last record of use and the first record of the injury. Then use search and Q&A to find other documented causes. The app shows you the pages. You and your expert judge what the timing means. Last checked 2026-10-24 — ·Written by Ahmed Jemaa **Help center contents26 articles** Start here - [Choose the right case type](https://medrecords.ai/help/tasks/choose-case-type/) - [Which files can you upload?](https://medrecords.ai/help/tasks/file-types-limits/) - [Confirm the case details, key date and focus](https://medrecords.ai/help/tasks/confirm-case/) - [Fix a failed upload or a stuck case](https://medrecords.ai/help/tasks/troubleshooting/) Work with the records - [Read the medical chronology](https://medrecords.ai/help/tasks/chronology/) - [Check any fact against its source page](https://medrecords.ai/help/tasks/verify-source/) - [Search your records with exact text or keywords](https://medrecords.ai/help/tasks/search/) - [Filter and group the documents index](https://medrecords.ai/help/tasks/documents-index/) - [Add flags, highlights and notes to records](https://medrecords.ai/help/tasks/annotations/) - [How duplicate pages are found and removed](https://medrecords.ai/help/tasks/deduplication/) - [Work through the missing records list](https://medrecords.ai/help/tasks/missing-records/) - [Add records to an existing case](https://medrecords.ai/help/tasks/add-records-later/) Write and share - [Edit the chronological narrative](https://medrecords.ai/help/tasks/narrative/) - [Create a report in Report Studio](https://medrecords.ai/help/tasks/report-studio/) - [Set up report templates](https://medrecords.ai/help/tasks/templates/) - [Export your work](https://medrecords.ai/help/tasks/export/) Account and trust - [Set your role](https://medrecords.ai/help/tasks/roles/) - [Is Medrecords AI HIPAA compliant, and who can see my cases?](https://medrecords.ai/help/tasks/security-hipaa/) - [How accurate is Medrecords AI, and what are its limits?](https://medrecords.ai/help/tasks/accuracy-limits/) - [Glossary of terms](https://medrecords.ai/help/glossary/) Case type playbooks - [Work a birth injury case](https://medrecords.ai/help/case-types/birth-injury/) - [Work a nursing home neglect case](https://medrecords.ai/help/case-types/nursing-home/) - [Work a VA disability case](https://medrecords.ai/help/case-types/va-disability/) - [Work a mass tort case](https://medrecords.ai/help/case-types/mass-tort/) - [Work a medical malpractice case](https://medrecords.ai/help/case-types/medical-malpractice/) - [Work a personal injury or car crash case](https://medrecords.ai/help/case-types/personal-injury/) [See every topic on the help center home](https://medrecords.ai/help/) ### The 3 dates to find | Date | What to look for | | --- | --- | | First use | The first fill, prescription, dose or implant surgery | | Last use | The last fill or dose, or the removal surgery | | First sign of injury | The first note, test or scan that names the claimed injury | Exposure is a period with a start record and an end record. Write down the page for each date. You will need them for the report. ### Find the dates on the timeline 1. Open the case and press **Timeline** . 2. Pick **Chronologies Index** to see every dated event. 3. Press **Filters** and set a date range around the exposure period. 4. Use the search box with **Exact** mode and the product name. 5. Click an event. The source page opens with the quote highlighted. You can also step through the case with **Date by date** and press **Next date** to move on. The month strip shows how many events fall in each month. See [read the medical chronology](https://medrecords.ai/help/tasks/chronology/). Check the **Undated Documents** button too. An undated pharmacy printout can still hold a fill date inside it. ### Ask Q&A about timing Q&A answers carry numbered page citations. Try questions like these: - "When is the first record that the claimant used the product? Quote the page." - "When is the last record of use?" - "When is the first record of the claimed injury?" - "Was the injury, or a sign of it, recorded before first use?" Click each citation and read the page. Do not rely on a date until you have seen it. See [check any fact against its source page](https://medrecords.ai/help/tasks/verify-source/). ### Find other documented causes A defense expert will look for anything else that could explain the injury. Find it first. On a mass tort case, Q&A is told to report other documented causes as readily as facts that support the claim. - Ask: "What other conditions, drugs or events in the records could relate to the claimed injury?" - Ask: "What did the claimant's history say before first use?" - Search with **Keywords** for terms such as "history", "prior" or a condition name. Add up to 6 keywords, each in its own colour. - Use the **Provider** filter to read 1 doctor's notes from start to end. Flag each page you find, for example with a flag called "Other cause". See [add flags, highlights and notes](https://medrecords.ai/help/tasks/annotations/). ### What the app will not do The app does not say the product caused the harm. It does not judge whether the timing is close enough. It finds the pages and quotes them. The **Causation Analysis** report puts these facts in one place, with sections for onset and timing, and findings that point elsewhere. See [which report to write](https://medrecords.ai/help/case-types/mass-tort/reports/). Read more about [product liability causation review](https://medrecords.ai/solutions/product-liability-medical-causation-review/). Medrecords AI organizes and cites the records. Its output is not a medical or legal opinion and does not replace your expert. ### Related help - [Mass tort playbook home](https://medrecords.ai/help/case-types/mass-tort/) - [Find proof of use in the records](https://medrecords.ai/help/case-types/mass-tort/records/) - [Read the medical chronology](https://medrecords.ai/help/tasks/chronology/) - [How accurate is Medrecords AI?](https://medrecords.ai/help/tasks/accuracy-limits/) Facts checked against the Medrecords AI app code on 2026-10-24. ### Try it on a real file Upload a case and see the page count and cost before you confirm. [Book a demo](https://medrecords.ai/demo/)