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  • zhengz
    Member
    • Aug 2010
    • 24

    read length limits sample prep time?

    It seems very critical to increase PCR time to generate less biased long amplicons such as >200, >400, >1kb? Trying to reduce sample prep time including emPCR might, at least currently, be limited by a sufficient time for emPCR.

    Not only accuracy and length, GC content is another issue. The recent Broad paper (on Illunima library prep) using increased time for the 98c step, from seconds to >1 min, plus some other adjustments, improved results with less GC biased reads.

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  • GATTACAT
    Reply to Nine Things a Sample Prep Scientist Thinks About Before Sequencing
    by GATTACAT
    Love this - good data definitely starts from good input, and poor input can only give relatively poor data. I particularly like the mention of Nanodrop/absorbance based methods for quantification. It's such a toss up if you'll get an accurate reading or what amounts to a randomly generated number, and a lot of library/sequencing related issues can be traced back to poor quant.
    07-01-2026, 11:43 AM
  • SEQadmin2
    Nine Things a Sample Prep Scientist Thinks About Before Sequencing
    by SEQadmin2


    I’m not a sequencing expert. I’m a purification scientist who uses NGS to evaluate workflows my group develops. With this perspective, we think about the sample first and the NGS workflow second. The sequencer is an exceptionally honest reporter, but it can only report on what you give it, so whether you get clean, interpretable data from an NGS workflow is largely determined before you begin.

    Here are nine questions we think about, in roughly the order they matter, before...
    06-18-2026, 07:11 AM

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