Fluorescence Spillover into Secondary Detectors

Symptom

One fluorochrome's emission spectra spills over into another detector channel, creating false positive signals. Data appears contaminated with signals that do not represent true marker expression.

1. 1 Insufficient compensation applied to correct for spectral overlap between fluorochromes
2. 2 Single-stain controls not properly measured for each fluorochrome in the panel
3. 3 Compensation calculated incorrectly or not applied during acquisition or analysis
4. 4 Multicolour panel design with fluorochromes having significant spectral overlap

1. 1 Prepare single-stain controls using beads or cell samples for each fluorescent marker in the panel
2. 2 Use software to calculate and apply correct compensation either in real time during acquisition or afterward during analysis
3. 3 Run compensation controls before each multicolour experiment to determine degree of spillover
4. 4 Optimize panel design to minimize spectral overlap between fluorochromes when possible

Related Video (3)

BD Biosciences ★ 95

Flow Cytometry Compensation Tips and Tricks

"Directly addresses flow cytometry compensation strategies, the exact technique needed to correct the spectral spillover described in this failure."

Bilibili (China-Accessible Mirrors) ★ 70

Flow Cytometry Experimental Operation in 7 Minutes

"Comprehensive hands-on protocol covering parameter adjustment and instrument operation, providing context for where compensation channel settings are configured."

Bilibili (China-Accessible Mirrors) ★ 65

BD FACSCelesta Software Operation Training

"Instrument software setup and acquisition workflow demonstration, useful for understanding where compensation controls are applied during acquisition."