MAXblock™ Blocking Medium is a protein-based, non-mammalian blocking agent for use in immunofluorescence and immunostaining assays. Superior blocking is achieved utilizing a protein blend that demonstrates no cross-reactivity with secondary antibodies. It has been proven effective at blocking non-specific binding of antibodies in immunofluorescence, as well as in immunohistochemistry.
Publications
MAXblock™ Blocking Medium (Cat. No. 15252)
Name | Format | Cat No. | Price | |
---|---|---|---|---|
MAXblock™ Blocking Medium | 150 ml | 15252 | $175 | Add to Cart |
MAXpack™ Immunostaining Media Kit | 1 kit | 15251 | $435 | Add to Cart |
MAXwash™ Washing Medium | 1000 ml | 15254 | $140 | Add to Cart |
Chromeo™ Fluorescent Dyes, Secondaries & Assays Profile |
MAXblock™ Blocking Medium Data Sheet |
MAXpack™ Immunostaining Media Kit Data Sheet |

Figure 1: MAXblock blocking efficacy.Methanol-fixed HeLa cells grown on a coverslip were blocked overnight with MAXblock (A), 5% non-fat dry milk (C), 5% BSA (D) or Thermo-Fisher Pierce Sea Block (E). Cells were then incubated with a fluorescent anti-rabbit secondary antibody at a dilution of 1:250 (far above the recommended dilution to demonstrate the effectiveness of MAXblock), washed with MAXwash and mounted with DAPI. Any observed signal (pseudo-colored red) is caused by non-specific binding of the secondary due to incomplete blocking. Note that no staining is observed in panel A, demonstrating the effectiveness of MAXblock. (Panel B is a 150% overexposure of the fluorescent channel of the MAXblock slide, which shows cell position and demonstrates that antibody binding is barely detectable above background.) Experiments with an anti-mouse secondary gave nearly identical results.
Get the exact immunofluorescence reagents you need
For your convenience, MAXblock is also offered as a component in the MAXpack™ Immunostaining Media Kit, which also contains MAXbind™ Staining Medium and MAXwash™ Washing Medium.