Research Workbench

Laboratory plate position audit

Check duplicate, missing and out-of-layout well coordinates in a declared rectangular plate.

Your entries stay in this page’s memory and are not submitted to us. Downloads are generated locally. Reloading or leaving the page clears your entries. Do not enter patient information.

First row number of lettered rows, columns; then one well per line

Use 1–26 lettered rows and 1–48 columns. Wells use letters A–Z and positive column numbers; A01 and A1 normalize to the same position. Supply only synthetic layout identifiers.

The starting values are hypothetical. Results update as you edit. Use aggregate or synthetic inputs only.

Calculation results

Expected positions: 6
Unique recorded positions: 5
Duplicate positions: B3
Outside declared layout: None
Missing positions: B2

How to interpret the output

Every position in the declared rectangle is treated as expected. Missing wells may be intentional controls or unused positions and require protocol review. This audit does not check sample identity, assay quality, contamination or whether a plate layout meets an experimental design.

Method reference

Source checked 2026-11-06. Read the reproducible calculator validation report.