MICROBIOLOGY | The MicroGenDX NGS Process

The MicroGenDX NGS Process – Perfected by Experience and Continuous Quality Improvement

Quality nucleic acid extraction

Nucleic acid extraction from multiple specimen types using tailored proprietary techniques that include concentrating cellular material, mechanical lysis, and removing organic inhibitors and human host DNA. Every specimen is processed with a positive and negative extraction control to assure quality.

Illumina MiSeq sequencing process

Illumina is the leading DNA sequencing platform, offering the lowest error rate of < 0.4%. Illumina’s 16S and ITS target gene deep sequencing afford high sensitivity, high discovery power, and high mutation resolution, with three positive and one negative control run alongside every specimen throughout the entire sequencing process to ensure the highest sensitivity and specificity possible.

Superior, curated, bacterial and fungal sequence database

Over 500,000 samples processed using a validated microbial database of over 50,000 referenced microbes, ensuring representation of every possible infective organism, resulting in 12 years of molecular testing quality and reliability.

2009-2020 CAP proficiency results: NGS identification to the species level

Species panelTest
frequency
Number of blinded samples per testTotal number of blinded specimensProficiency
score
IDR3 times per year for 7 years510598.1%
MRS-5M3 times per year for 12 years5180100%
F13 times per year for 12 years518098.30%
D83 times per year for 12 years518099.40%
VRE2 times per year for 12 years250100%
GIP3 times per year for 4 years560100%
HC-63 times per year for 3 years545100%
TVAG2-3 times per year for 2 years32190.50%
Alternate3 times per year for 12 years6216100%
See species panel keyBlinded specimen
total: 1,037
Mean accuracy rate: 99.2%
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