Madeleine Johnson
Madeleine covers PCR, nucleic acid amplification, and sample prep technologies for GenomeWeb and 360Dx.

Articles Authored by Madeleine Johnson
The firm expects to establish a US-based development and manufacturing footprint for its multiplex PCR assay kits.
The firm submitted a low-cost RT-LAMP device and COVID test to the FDA for Emergency Use Authorization this week.
The endpoint method uses so-called endogenous barcodes and molecular beacons to multiplex dozens of targets in a single reaction.
Bio-Rad Laboratories Maps Growth Trajectory Focused on Biopharma, Asia/Pacific, New Products
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With new focus, the firm expects to grow its compound annual growth rate from 5.2 percent to 9 percent over the next few years.
Quidel Q4 Revenues Drop 21 Percent, Beat Estimates
Molecular diagnostics revenue dropped 47 percent due to lower volumes and selling prices for COVID-19 PCR products.
The firm has developed a technology to sort cells based on 11 non-fluorescent parameters and process up to one million cells per minute.
CDC Launches Public COVID-19 Wastewater Surveillance Dashboard
In a briefing with the media the agency described the status of US wastewater surveillance efforts and future directions.
Gold 'Nanodimple' Array With Plasmonic Sensor Lowers PCR Detection Thresholds, Researchers Say
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A team in South Korea has developed a method that can increase sensitivity when paired with surface-enhanced Raman spectroscopy.
Newly merged with a firm founded by BioFire Diagnostics alums, Co-Diagnostics plans to develop small panels for the system with up to six targets.
Diagnostic Developers Pursue SARS-CoV-2 Omicron Assays for Surveillance, Potential Clinical Use
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The FDA thus far has not been interested in PCR tests to identify specific SARS-CoV-2 variants, but that may be changing with the emergence of Omicron.