A routine day
A screening day, step by step
Plan the dilutions, read the plates, call wells, fit the IC50s, read the compounds as one set and make a stock of one.
Who it is for An assay scientist with forty compounds across a set of plates.
Step by step
1Calc
Plan the dilution series and its plate
A serial dilution with volumes per step, sent on as a plate layout.
Serial dilution calculator and planner
Next, in Assay
2Assay
Read the plate set as a screening campaign
96-, 384- and 1,536-well plates, each normalised to its own controls, with Z′ beside it.
Limit Z′ is shown, not used to accept or reject a plate. Robust z needs 16 sample wells. Rows, columns and edges are not corrected.
3Assay
Call wells at a threshold you choose
You set the threshold. Wells are ranked and called "at or above threshold on this plate".
Limit A call is a single reading with no replicate or retest, not a confirmed result or evidence of activity.
4Assay
Fit the dose-response curves in one batch
Four-parameter fits, each IC50 with its interval where the fit gives one, or the reason it is withheld.
IC50 and EC50 calculator with confidence intervals
Next, in Molecule: send the saved assay to the compound set, one row per curve. More than 200 curves is refused, never cut.
5Molecule
Read the compounds as one set
One row per compound with structure, pIC50, properties, alerts and the nearest approved drug. Rows a filter cannot test are counted, not dropped.
Next, in Calc
6Calc
Export the set, and take one compound to a stock
Export the set as a ZIP. One compound opens in the stock calculator with its full formula weight, salt included.
What this day does not cover
- Calls are per plate, at the threshold you chose. Drift follows the order the plates were pasted, not time.
- A batch fit takes up to 400 curves, and the compound set up to 200 rows. The filter is not saved.
- Ligand efficiency is not in the set, and SD files are not read as tables.
Who else this suits For assay analysis · For medicinal chemistry
For research and education only, and not medical, investment, regulatory or legal advice.