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  • lijing2019
    Junior Member
    • May 2019
    • 5

    #1

    discrepancy between qubit and bioanalyzer results

    When I do the QC for my bead cleaned-up pre-amplified cDNA (Smartseq2) using AATI fragment analyzer and bioanalyzer, the concentration was very low (0.01ng/uL) and almost no peaks. But when I measured the same samples using Qubit, I got about 0.1ng/uL. Why are these methods giving different concentrations? Thanks!
  • cmbetts
    Senior Member
    • Jun 2012
    • 120

    #2
    The FA/BA is probably a more accurate measurement (although I trust qubit more for concentrations >1ng/ul). It's easy to get background readings of 0.1-0.3ng/ul by qubit. Did you run a negative control for comparison?

    Comment

    • lijing2019
      Junior Member
      • May 2019
      • 5

      #3
      Originally posted by cmbetts View Post
      The FA/BA is probably a more accurate measurement (although I trust qubit more for concentrations >1ng/ul). It's easy to get background readings of 0.1-0.3ng/ul by qubit. Did you run a negative control for comparison?
      OK, I see. I will include a negative control to see how it goes. Thank you for your reply.

      Comment

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