Bio-Rad Bio-Plex Pro™ TGF-β Assays - Manual (Page 22)

7. Run Assay
Considerations
n
Bring all assay components and samples to room temperature before use
n
Use calibrated pipets and pipet carefully, avoiding bubbles. Use new
pipet tips for every volume transfer
n
Pay close attention to vortexing, shaking, and incubation instructions.
Deviation from the protocol may result in low assay signal and
assay variability
n
Assay incubations are carried out in the dark on a shaker at
850 ± 50 rpm. Cover the plate with sealing tape and protect from
light with aluminum foil
Table 9. Summary of wash options and protocols. After each assay step, select the
appropriate Bio-Plex Pro
™ wash station program or perform the appropriate manual wash step
as summarized below.
Considerations when Using a Vacuum Manifold
n
After each incubation, place the filter plate on a calibrated vacuum
apparatus and remove the liquid by vacuum filtration
n
To wash, add 100 μl wash buffer to each well and remove the liquid as
before. Ensure that all wells are exposed to the vacuum
n
Thoroughly blot the bottom of the filter plate with a clean paper towel
between each vacuum step to prevent cross contamination
n
Place the assay plate on the plastic plate holder/tray as needed
n
Before each incubation, gently cover the plate with a new sheet of
sealing tape. Avoid pressing down over the wells to prevent leaking
from the bottom
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Bio-Plex Pro or Bio-Plex Pro II Handheld Magnet
Pro II Wash Station Wash Station or Vacuum Manifold
Assay Step Magnetic Program Vacuum Program Manual Wash Steps
Add beads to plate MAG x2 VAC x2 2 x 100 μl
Sample incubation MAG x3 VAC x3 3 x 100 μl
Detection Ab incubation MAG x3 VAC x3 3 x 100 μl
SA-PE incubation MAG x3 VAC x3 3 x 100 μl