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Surface Staining


Surface Staining of Human Red Blood Cells


  1. Add 1 µl whole blood into each sample tube containing 100 µl staining buffer (PBS with 1%FBS, 0.09% sodium azide).
  2. Add 20 µl of properly diluted antibody or isotype control to the sample tubes. Mix gently.
  3. Incubate at room temperature (RT) for 20-30 minutes.
  4. Wash with 2 ml of staining buffer at 200 x g for 5 minutes.
  5. Aspirate the supernatant.
  6. For purified and biotin conjugate: add 50 µl of diluted secondary reagent, incubate at RT for 15-20 minutes. For direct conjugates proceed to step 8.
  7. Repeat steps 3 & 4.
  8. Add 0.5 ml of staining buffer to each tube.
  9. Proceed to flow cytometric analysis.


Data Acquisition Note: Setting FSC and SSC detectors to log mode provides better resolution compared to linear mode.


Rbc 2Rbc 1