Can you see the faint band, or only the background in your western blot?

Low-abundance targets can disappear when signal clarity is poor. This application note compares VerdiBlot and PVDF for LACTB and GAPDH detection across 1–20 µg loads, including wet transfer, Blue Native PAGE and reprobing.

A faint band is only useful when you can distinguish it from the background.

This application note examines LACTB and GAPDH detection on VerdiBlot and PVDF using human cell lysates loaded from 1 to 20 µg.

The study includes two workflows:

• SDS-PAGE followed by wet transfer
• Blue Native PAGE followed by wet transfer

Both membranes were processed using the same transfer, blocking, antibody and chemiluminescence conditions. The comparison focused on protein transfer, background, band intensity, sharpness, handling, and performance after stripping and reprobing.

Under the tested conditions, VerdiBlot produced clearly defined LACTB and GAPDH bands with very low background. Faint bands remained easier to distinguish, which is especially relevant when working with low-abundance targets or limited sample amounts.

The Blue Native experiment also tested whether VerdiBlot could support native protein analysis and subsequent total-protein staining within the same workflow.

If background is obscuring weak signals in your chemiluminescent Western blots, this application note provides a practical comparison, complete protocols and the original experimental images.

Read the complete application note:
https://www.verdiblot.com/_files/ugd/de6bd3_5646fdc637a845bb96a127f43ab58181.pdf