STB-AVI401-002XLSX
Source excerpt · Study!A1:B8
Havenor Therapeutics · Its newest medicine, Avericin, is finished and waiting for a health authority to approve it.
Task 09 · QC Stability Scientist
Decide which stability-testing operations can proceed
Review the package as the lab’s quality reviewer: decide what can proceed, what is held, and what evidence lifts each hold.
GPT-5.6 Sol caught 7 of 15 traps. See which →
3What just happened?
The lab needs to know which shelf-life tests can go ahead and which must wait.
The 24-month test campaign and the answers to the regulator’s questions are bundled in one working package. The lab can’t move until Quality says what may proceed, what is on hold, and what would lift each hold.
4Who has to do what?
Review the package as the lab’s quality reviewer: decide what can proceed, what is held, and what evidence lifts each hold.
- The seat
- Viktor Takacs, QC Stability Scientist
- What a good answer looks like
- It gives an operation-by-operation go/hold decision, catches every expired or lapsing item, states the shelf-life trend plainly, and keeps one consistent timeline.
- What must be handed in
STB-AVI401-002_24M_campaign_decision_and_response.xlsx
The assignment as the model received it
Bring Tomas's consolidated 24-month campaign and authority-response package through QC technical review. Preserve his baseline, correct the workbook in place, distinguish present conclusions from future evidence, and name the next attributable review trigger for every conditional decision.
5Which files decide it?
The campaign workbook, equipment, calibration and reference-sample records, the shelf-life data, and the regulator’s questions.
The model also has the rest of the company’s shared drive, its chat and its record systems. Finding the right files is part of the job. Flip through the key ones below.
Company documents
Some of the documents available to the model.
Laboratory stability · workbook
The next results do not exist yet
The company date is 8 February 2027. The pull schedule distinguishes completed laboratory work from the next planned measurements.
An agent can prepare the update now, but cannot present the scheduled 24-month results as already reported.
6What did the model do?
What GPT-5.6 Sol did, step by step.
In short: Sol recalculates each lot’s bound, records operating gates and a twenty-item action ledger, and then corrects its own storage gate.
Step 18. Recalculates each lot’s bound. Sol computes when each lot’s upper bound crosses the 0.50% limit. The workbook does not turn these numbers into a clear conclusion that 36 months is unsupported.
Calculation resultcross mean/pred 31.310407390146146
Bears on: State the trend conclusion plainly
Step 33. Holds testing on missing records. Sol holds assay and CCI testing because it treats the reference standard and calibration records as absent. Both exist, with expiry dates that allow part of the planned work.
Text written into the workbookassay (RS-AVR-014 absent)
Bears on: A reference sample expires mid-campaignAn instrument’s calibration ends before use
Replay every step of the run →
Inside the run
A
Model
Recalculates each lot’s bound
Tool result
cross mean/pred 31.310407390146146
A
Sol computes when each lot’s upper bound crosses the 0.50% limit. The workbook does not turn these numbers into a clear conclusion that 36 months is unsupported.
1 / 2
7Which traps did it catch?
It caught 7 of 15.
Specialists wrote these checks from the real records before any model ran. Each is a weak spot a reviewer or inspector would find. A check passes only if the handed-in file states it.
Missed
Fix the batch-to-bag-size mix-up R03
Two test batches are 100 mL bags and one is a 250 mL bag. The workbook wrongly lists a 250 mL and a 500 mL batch; there is no 500 mL batch.
If missed, the wrong bags get tested and the worst case is never checked.
List the complete testing chain R04
Every test in the specification needs its storage chamber, method, instrument and reference sample listed, and nothing unrelated.
If missed, a test can start with an unqualified piece of the chain.
A reference sample expires mid-campaign R06
The reference sample expires 19 March 2027. It can support the strength tests planned for 15–18 March, not the impurity tests planned for 22–26 March.
If missed, the impurity results are measured against an expired reference.
An instrument’s calibration ends before use R07
The leak-test instrument was calibrated 12 April 2026 for 12 months, so it is out of calibration for its planned use on 13–14 April 2027.
If missed, the leak-test results are invalid.
State the trend conclusion plainly R09
Every batch’s upper estimate crosses the limit before 36 months; the worst at about 26.8 months. Today’s data don’t support 36 months.
If missed, the key finding is buried and the shelf life stays overstated.
One timeline that adds up R10
Impurity tests run to 26 March and leak tests to 14 April, so the full dataset comes after the 20 March response, which must rely on existing evidence and name the gaps.
If missed, the regulator is promised a complete dataset that can’t exist yet.
“Within the limit” doesn’t settle it R13
An accelerated-test result of 0.46% is under the 0.50% limit, but conflicting records mean someone must still formally decide whether it counts as a “significant change”.
If missed, a formal regulatory question is waved away.
Don’t claim more than the evidence shows R15
The filter and IV-set answers must stay within the tested limits and name what’s missing, such as a hold longer than 8 hours being untested.
If missed, the regulator is told something is covered when it isn’t.
Caught
Sign and date the review honestly R01
The review is recorded under the reviewer’s name as of today (8 Feb 2027), without back- or forward-dating and without claiming to have changed official systems.
If missed, nobody can tell who decided what, and when.
Every fix needs an owner and a deadline R02
Each problem sent back must name one responsible person, a due date, what it blocks, what evidence closes it, and exactly where that evidence lives.
If missed, problems get flagged but never closed.
The storage chamber’s approval runs out R05
The chamber holding the samples is calibrated until December, but its separate qualification ends 28 February 2027 — the day before the samples are due.
If missed, the samples sit in an unqualified chamber and their results can be challenged.
Show the math so anyone can redo it R08
The shelf-life calculation uses each batch’s actual results and gives projections and error figures others can reproduce.
If missed, nobody can check the shelf-life conclusion.
Answer all seven regulator questions R11
The regulator asked seven numbered questions, including a small one about the filing’s page layout. Each needs an owner, the evidence required, and a route back to the regulator.
If missed, an unanswered question delays approval.
Answer about the current wrapper R12
The oxygen answer cites the approved wrapper and admits nobody has measured oxygen inside the bags; the proposed new film is out of scope.
If missed, the regulator gets evidence about a wrapper that isn’t in use.
Did the lab error hit other tests? R14
A past test run was thrown out because of a mixing mistake. The record needs the cause, the replacement result, and a check of whether the same mistake affected other runs.
If missed, other results made with the same mistake stay on file.
Every model on the same job
One attempt each, same assignment and checklist, so treat small gaps as noise.
Workbook changes
STB-AVI401-002_24M_campaign_decision_and_response.xlsx
Selected cells before and after the model’s edits. Longer entries are shortened here.
477cells changed across the submitted workbook
Control10 changed cells
| Cell | Baseline | Submitted entry / excerpt |
|---|---|---|
| C2 | Blank | Viktor Takacs, QC technical reviewer |
| C9 | Blank | CONDITIONAL APPROVAL — scheduled pull into controlled quarantine may proceed. All testing is held at the storage-chain gate; after that gate closes, testing remains split GO/HOLD by test. No complete-dataset or commitment handoff until every required 24-month result is verified. |
Operation Gates80 changed cells
| Cell | Baseline | Submitted entry / excerpt |
|---|---|---|
| E2 | Blank | GO / QUARANTINE |
| F2 | Blank | Proceed with the fixed 2027-03-01 pull to protect the scheduled timepoint, but place samples in controlled quarantine. Current calibration covers the date; the reviewed chamber requalification evidence does not cover 2027 (36-month interval elapsed). |
Qualified Chain96 changed cells
| Cell | Baseline | Submitted entry / excerpt |
|---|---|---|
| H2 | Blank | QC Stability Scientist |
| G2 | Blank | Correction: MTH-VIS-002 states no instrument and no reference standard; UV-02 is outside this chain. Method revalidation 2025-06-12 is within the 60-month interval. |
Impurity A Analysis24 changed cells
| Cell | Baseline | Submitted entry / excerpt |
|---|---|---|
| K2 | Blank | =INDEX(LINEST({0.05,0.1,0.13,0.17,0.2,0.3},{0,3,6,9,12,18},TRUE(),TRUE()),3,2) |
| I2 | Blank | =INTERCEPT({0.05,0.1,0.13,0.17,0.2,0.3},{0,3,6,9,12,18})+24*SLOPE({0.05,0.1,0.13,0.17,0.2,0.3},{0,3,6,9,12,18}) |
Authority Response56 changed cells
| Cell | Baseline | Submitted entry / excerpt |
|---|---|---|
| F2 | Blank | Regulatory CMC Manager |
| E2 | Blank | Administrative defect only; QC confirms no new technical content is requested. Regulatory CMC owns corrected P.7 leaf and publishing QC. |
Action Ledger200 changed cells
| Cell | Baseline | Submitted entry / excerpt |
|---|---|---|
| B2 | Blank | Operation Gates E2; Qualified Chain F12 |
| C2 | Blank | Execute the scheduled pull for all three lots and place samples in controlled quarantine pending ACT-12. |
QC Disposition11 changed cells
| Cell | Baseline | Submitted entry / excerpt |
|---|---|---|
| B3 | Blank | 2027-02-08 |
| B2 | Blank | CONDITIONAL APPROVAL — scheduled pull into controlled quarantine may proceed. All reportable testing is held pending storage-chain resolution; test-specific holds also apply. Dataset and unsupported response claims remain held. |
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