Streck launches new MDx-Chex controls for respiratory low-plex testing
New MDx‑Chex for RLP controls support full‑process verification for respiratory molecular assays
1 May 2026Product news
Streck has released MDx-Chex for RLP, a new molecular quality control designed to support clinical laboratories worldwide in verifying respiratory low plex assays wherever they operate. MDx-Chex for RLP is a true patient-like, ready-to-use, full-process molecular quality control that helps laboratories ensure accurate, reliable results across respiratory pathogen testing, from sample lysis through nucleic acid extraction to detection.
What is MDx-Chex for RLP?
MDx-Chex for RLP is the latest addition to the MDx-Chex® portfolio of molecular quality controls from Streck. The control is specifically developed for respiratory low plex assay verification and is suitable for use in molecular diagnostics laboratories performing routine respiratory testing.
Each MDx-Chex for RLP control contains intact, inactivated microorganisms suspended in a stabilized, patient-like matrix. This design allows laboratories to evaluate the entire molecular workflow, including:
- Lysis
- Extraction
- Amplification
- Detection
Respiratory pathogens covered by MDx-Chex for RLP
The MDx-Chex for RLP control is configured to support verification of commonly targeted respiratory pathogens. Each single-use vial covers:
- Influenza A
- Influenza B
- Human rhinovirus
- Human respiratory syncytial virus (RSV)
- SARS-CoV-2
- Streptococcus pyogenes (Group A Strep)
This broad coverage enables laboratories to assess performance across multiple clinically relevant respiratory pathogens within a single control material.
Key features for molecular diagnostics laboratories
MDx-Chex for RLP has been engineered to integrate smoothly into existing respiratory testing workflows:
- True patient-like, full-process molecular quality control
- Intact, inactivated microorganisms in a stabilized matrix
- Single-use vials to support consistent, contamination-resistant workflows
- Instrument-agnostic design compatible with a wide range of molecular platforms
- Room temperature storage to simplify logistics and inventory management
These features help laboratories achieve reliable assay performance, streamlined workflows and confident reporting of respiratory test results.
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Frequently asked questions
What is Streck’s MDx-Chex for RLP molecular quality control and how is it used in respiratory low plex assay verification?
MDx-Chex for RLP is a true patient-like, ready-to-use, full-process molecular quality control from Streck, designed specifically for respiratory low plex assay verification in molecular diagnostics laboratories performing routine respiratory testing. Each control contains intact, inactivated microorganisms suspended in a stabilized, patient-like matrix, enabling laboratories to evaluate the entire molecular workflow, including lysis, nucleic acid extraction, amplification and detection, to help ensure accurate and reliable respiratory pathogen test results.
Which respiratory pathogens are covered by MDx-Chex for RLP for molecular diagnostics laboratories?
MDx-Chex for RLP is configured to support verification of commonly targeted respiratory pathogens within a single control material. Each single-use vial covers influenza A, influenza B, human rhinovirus, human respiratory syncytial virus (RSV), SARS-CoV-2 and Streptococcus pyogenes (Group A Strep), enabling laboratories to assess performance across multiple clinically relevant respiratory pathogens in their respiratory testing workflows.
What key features of MDx-Chex for RLP support reliable respiratory testing workflows on molecular platforms?
MDx-Chex for RLP offers several features tailored to molecular diagnostics laboratories, including that it is a true patient-like, full-process molecular quality control containing intact, inactivated microorganisms in a stabilized matrix. It is supplied in single-use vials to support consistent, contamination-resistant workflows; it has an instrument-agnostic design compatible with a wide range of molecular platforms; and it can be stored at room temperature to simplify logistics and inventory management. These features help laboratories achieve reliable assay performance, streamlined workflows and confident reporting of respiratory test results.