Per-animal response latency with cutoff clamping, group means with SEM, and CSV export. Ready for %MPE opioid dose-response workflows.
| Animal ID | Group | T1 (s) | T2 (s) | T3 (s) | |
|---|---|---|---|---|---|
Cutoff: 30s. Values exceeding cutoff are clamped on calculation.
When to use
Do not use for
The cutoff is both a welfare rule and a mathematical ceiling. Changing it after seeing the data biases group means and %MPE calculations.
Mixing paw lick, jump, rearing, and grooming endpoints across observers can add noise. Choose the endpoint list in advance and train observers against sample videos.
Small plate temperature changes can shift baseline latency. Let the plate equilibrate before testing and document verification checks during the session.
For each animal, non-empty trials are clamped at the selected cutoff before averaging. Group summaries are computed from animal means. SEM uses the sample standard deviation divided by the square root of group n. All computation runs in the browser.
Last validated 2026-04-30. Calculations are designed for planning and documentation support; verify procurement decisions against manufacturer specifications or institutional SOPs.
ConductScience Hot Plate Latency Calculator (v1.0). ConductScience, Inc. 2026. Available at: https://conductscience.com/tools/hot-plate-latency-calculator
This tool performs calculations on user-entered latency data. It does not set animal welfare limits, replace IACUC-approved protocols, or determine exclusion criteria.
The hot plate test is a thermal nociception assay used in analgesic screening and pain model phenotyping. A rodent is placed on a temperature-controlled plate, usually 52 to 55 degrees Celsius, and the observer records the latency to a defined nocifensive response such as paw licking or jumping.
The endpoint is a response latency in seconds. Longer latencies often reflect reduced nociceptive responding, but interpretation depends on locomotor status, sedation, stimulus intensity, and consistent endpoint scoring.
This calculator clamps every trial above the cutoff to the cutoff value. It then computes each animal mean from the clamped trials and summarizes groups as mean latency with SEM.
Use the same cutoff in downstream %MPE analysis. If baseline latency is available, compute %MPE as ((post-drug latency - baseline latency) / (cutoff latency - baseline latency)) x 100 in the Pain %MPE Calculator.
Set the cutoff before data collection and apply it to every animal. Verify plate temperature with an independent thermometer, standardize ambient temperature, and blind observers to treatment when manual scoring is used.
Predefine the response criterion, keep inter-trial intervals at 10 minutes or longer, and review video when response calls are ambiguous.
Define hot plate latency, cutoff rules, response criteria, and reporting requirements before analysis
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