The Letter to the Editor by Cheng et al. entitled “DNase1 Does Not Appear to Play a Major Role in the Fragmentation of Plasma DNA in a Knockout Mouse Model” (Clin Chem 2018;64:406–8) contains an error. The sentence on page 407 that reads:

  • “The blood was put into EDTA-containing collection tubes that were centrifuged at 16 000g at 4 °C for 10 min.”

should read:
  • “The blood was put into EDTA-containing collection tubes that were centrifuged at 1600g at 4 °C for 10 min.”

The authors regret the error.

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