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Table 1 Details of RNA extraction and purification methods

From: Flexible upscaling of laboratory PCR testing capacity at the Robert Koch Institute during the SARS-CoV-2 pandemic

Instru-ment (manufacturer)

Kit

Instrument protocol

Lysis and inactivation procedure

Sample volume (µl)

Elution volume (µl)

Conc. factor (sample vol. to elution vol.)

QIAcube Connect (Qiagen)

QIAamp Viral RNA Mini

QIAamp Viral RNA_Body fluid_Manual lysis custom-12a

560 µl of buffer AVL + 560 µl of ethanol (off-board)

140

60

2.3

QIAcube HT (Qiagen)

QIAamp 96 Viral RNA

QIAamp 96 Viral RNA OBL Protocol (high vacuum)b

560 µl of buffer AVL + 560 µl of ethanol (off-board)

140

80

1.75

QIAsym-phony SP (Qiagen)

QIAsymphony DSP Virus/Pathogen

ComplexOBL_2019-nCoVa

560 µl of buffer AVL + 560 µl of ethanol (off-board)

140

60

2.3

MagNA Pure 96 (Roche)

MagNA Pure 96 DNA and Viral NA Small Volume Kit

Viral NA Plasma ext lys SV 4.0

250 µl of external lysis buffer (off-board)

200

50

4

KingFisher Flex (Thermo Fisher Scientific)

MagMAX Viral/Pathogen Nucleic Acid Isolation

MVP_2Wash_200_Flex

0.25 mg of Proteinase K (on-board)

200

50

4

  1. aCustom protocol: Sample lysis and addition of ethanol is performed manually
  2. bCustom protocol: Sample lysis and addition of ethanol is performed manually. Maximum vacuum power is applied at all vacuum steps. TopElute Fluid is not used