Flow Cytometry Compensation Wizard

Pain point

Multicolor flow panels show distorted populations and gating confusion due to incorrect compensation and controls.

Repro/diagnostic steps

1. Confirm panel fluorophores and instrument lasers/filters.
2. Verify you have single-stain controls for each fluorochrome + an appropriate negative.
3. Check whether controls were acquired under the same settings as samples.

Root causes (common)

• Missing or poor-quality single-stain controls.
• Controls not matched to sample state (fix/perm effects; beads vs cells mixing).
• Incorrect scaling or saturated signals during acquisition.

Fix workflow

1. Collect single-stain controls contemporaneously with samples, using the same instrument settings.
2. Generate a compensation matrix from these controls; apply consistently.
3. Validate by checking expected population shapes and spillover behavior.

Expected result

• Compensated data show plausible population separation without artifacts from spillover.

References

• https://docs.flowjo.com/flowjo/experiment-based-platforms/plat-comp-overview/
• https://expert.cheekyscientist.com/how-to-set-up-compensation-controls-for-flow-cytometry/
• https://www.biolegend.com/en-us/compensation