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The ePlex Instrument is an automated in vitro diagnostic (IVD) device designed to perform multiplexed nucleic acid tests for the simultaneous detection and identification of nucleic acid targets by processing single-use cartridges developed and manufactured by GenMark Diagnostics, Inc.

The ePlex® Instrument is used to run single-use assay cartridges that incorporate digital microfluidics and GenMark's eSensor® detection technology (used by products that are currently FDA-cleared: K073720 and K090901) to automate all aspects of nucleic acid testing. The ePlex Instrument is designed to: provide a nucleic acid amplification testing solution directly from various sample types, provide random access testing capability, and require minimal operator interaction. The ePlex Instrument includes the following components: - . Base: A touchscreen graphical user interface (GUI) powered by a PC with a Windows Operating System 7. The base communicates with the bays to transfer data. The instrument software installed on the ePlex base processes the raw data generated by the individual bays and determines the test result. - Tower: A chassis housing six bays. ePlex is scalable from one to four towers . connected to either side of the base. - . Bay: 6 bays are housed in each tower. Each bay will accept cartridges independent of the testing status of the other bays allowing for random access testing. Each bay has an Ethernet port for communication with the base unit to receive user inputs and deliver test data to the ePlex Instrument software. The touchscreen graphical user interface (GUI) is flanked on either side by a tower with six bays containing a slot for the cartridge and an LED to indicate bay status (in-use or available for use). The instrument is designed to be scalable with configurations to accommodate a single tower with 6 bays or up to four towers with 24 bays. The ePlex system is used to run multiplex microarray-based assays developed by GenMark. This type of assay is based on the principles of competitive nucleic acid hybridization using a sandwich assay format, wherein a single-stranded target binds concurrently to a sequencespecific solution-phase signal probe and a solid-phase electrode-bound capture probe. The test employs nucleic acid extraction, target amplification via polymerase chain reaction (PCR) or reverse transcription PCR (RT-PCR) and hybridization of target DNA. In the process, the double-stranded PCR amplicons are digested with exonuclease to generate single-stranded DNA suitable for hybridization. Nucleic acid extraction from biological samples occurs within the cartridge via cell lysis, nucleic acid capture onto magnetic beads, and release for amplification. The nucleic acid extraction is processed through microfluidic liquid handling. Once the nucleic acid targets are captured and inhibitors are washed away, the magnetic particles are delivered to the electrowetting environment on the printed circuit board (PCB) and the targets are eluted from the particles and amplified. During hybridization, the single-stranded target DNA binds to a complementary, singlestranded capture probe immobilized on the working gold electrode surface. Single-stranded signal probes (labeled with electrochemically active ferrocenes) bind to specific target sequence / region adjacent to the capture probe. Simultaneous hybridization of target to signal probes and capture probe is detected by alternating current voltammetry (ACV). Each working electrode on the array contains specific capture probes, and sequential analysis of each electrode allows detection of multiple analyte targets.

The FilmArray 2.0 is an automated in vitro diagnostic (IVD) device designed for use with FilmArray panels. The FilmArray 2.0 is intended for use in combination with assay specific reagent pouches to detect multiple nucleic acid targets contained in clinical specimens.

The FilmArray 2.0 is an automated in vitro diagnostic (IVD) device designed to work with specific FilmArray reagent panels to detect multiple nucleic acid targets contained in clinical specimens. The FilmArray 2.0 instrument interacts with a reagent pouch to both purify nucleic acids and amplify targeted nucleic acid sequences using nested multiplex PCR in a closed system. The resulting PCR products are evaluated using DNA melting analysis. The FilmArray 2.0 software automatically determines the results and provides a test report. The FilmArray 2.0 permits up to eight instruments to connect to one computer. This configuration reduces the space requirements for the system and offers centralized data management. Accessories for the FilmArray 2.0 include a computer stand and printer, a barcode scanner, an external Ethernet switch that allows several instruments to connect to a single computer, and an optional modular rack system to stack two instruments. The main functions of the FilmArray 2.0 are as follows: - Moving liquids within the pouch and delivering rehydrated reagents in a specified . sequence to drive the nucleic acid purification and PCR amplification reactions. - . Heating and cooling to drive the PCR reactions and DNA melting. - . Capturing and processing of fluorescence images for analysis by the software. - . Automated data interpretation and test report generation.

The Vantera® Clinical Analyzer is an automated laboratory test analyzer which measures the 400 MHz proton nuclear magnetic resonance (NMR) spectrum of clinical samples to produce signal amplitudes, converting these signal amplitudes to analyte concentration. The device includes a 400 MHz NMR spectrometer and software to analyze digitized spectral data. This instrumentation is intended to be used with NMR based assays to detect multiple analytes from clinical samples. The NMR LipoProfile® test, when used with the Vantera® Clinical Analyzer, an automated NMR spectrometer, measures lipoprotein particles to quantify LDL particle number (LDL-P), HDL cholesterol (HDL-C), and triglycerides in human serum and plasma using nuclear magnetic resonance (NMR) spectroscopy. LDL-P and these NMR-derived concentrations of HDL-C and triglycerides are used in conjunction with other lipid measurements and clinical evaluation to aid in the management of lipoprotein disorders associated with cardiovascular disease.

The Vantera Clinical Analyzer is a clinical laboratory analyzer that employs nuclear magnetic resonance spectroscopic detection to quantify multiple analytes in biological fluid specimens, specifically blood plasma and serum. The Vantera Clinical Analyzer system design is divided into 3 major subassemblies: a sample handling assembly, an NMR subassembly, and an enclosure. The Vantera Clinical Analyzer control system is distributed across three separate computers: - The Host (1 U) controls user interface, data handling, results calculation, system startup and shutdown. - The Process Control (4U) schedules and manages all activities required to process a sample, controls all hardware in the sample handling subsystem. - The NMR Control Computer controls all magnet operations. Two of these computers are contained within the Sample Handling Subassembly (1 U and 4U) and one in the NMR Subassembly (NMR Console). The NMR LipoProfile test involves measurement of the 400 MHz proton NMR spectrum of a plasma/serum sample, deconvolution of the composite signal at approximately 0.8 ppm to produce signal amplitudes of the lipoprotein subclasses that contribute to the composite plasma/serum signal, and conversion of these subclass signal amplitudes to Lipoprotein subclass concentrations. The -0.8 ppm plasma NMR signal arises from the methyl group protons of the lipids carried in the LDL, HDL and VLDL subclasses of varying diameters. The NMR signals from the various lipoprotein subclasses have unique and distinctive frequencies and lineshapes, each of which is accounted for in the deconvolution analysis model. Each subclass signal amplitude is proportional to the number of subclass particles emitting the signal, which enables subclass particle concentrations to be calculated from the subclass signal amplitudes derived from the spectral deconvolution analysis. LDL subclass particle concentrations, in units of nanomoles of particles per liter (nmol/L), are summed to give the reported total LDL particle concentration (LDL-P). By employing conversion factors assuming that the various lipoprotein subclass particles have cholesterol and triglyceride contents characteristic of normolipidemic individuals, HDL cholesterol and triglyceride concentrations are also derived.

The Applied Biosystems® 7500 Fast Dx Real-Time PCR instrument with the SDS Software is a real-time nucleic acid amplification and five color fluorescence detection system for use with FDA cleared or approved tests on human-derived specimens. The 7500 Fast Dx Real-Time PCR instrument and SDS Software are intended for use in combination with in vitro diagnostic tests labeled for use on this instrument. The 7500 Fast Dx instrument is intended for use by laboratory professionals trained in laboratory techniques, procedures, and on use of the system.

The Applied Biosystems® 7500 Fast Dx Real-Time PCR instrument integrates a thermal cycler, a fluorimeter and application specific software. The instrument houses the thermal cycler and the fluorimeter, while the application software is run on a PC that is attached to the instrument. Samples are placed in a tube strip or 96-well low-head space plate that is moved to a Peltier-based thermal block and positioned relative to the optics using a tray loading mechanism. Excitation for all samples is provided by a halogen tungsten white source that passes through 5 switchable excitation filters prior to reaching the sample. Fluorescence emission is then detected through 5 color emissions filter wheel to a charge coupled device (CCD) camera. The instrument is designed to complete quantitative RT-PCR runs in about 40 minutes. The Sequence Detection Software (SDS) is used for instrument control, data collection and data analysis. The software provides a wizard for user-friendly set-up. The software measures cycleby-cycle real-time signals from the sample and provides a variety of tools to help the user analyze the data extracted from the samples. In addition, the software provides lamp-life monitoring and other instrument maintenance information. The software runs as an application on the Windows 7 platform.

The Luminex® FLEXMAP 3D® system with xPONENT® software is a clinical multiplex test system intended to measure and sort multiple signals generated in an in vitro diagnostic assay from a clinical sample. This instrumentation is intended for use with specific IVD cleared or approved assays citing its use, to measure multiple similar analytes that establish a single indicator to aid in diagnosis.

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The Luminex® FLEXMAP 3D® system with xPONENT® software version 4.0 SP1 is a clinical multiplex test system intended to measure and sort multiple signals generated in an in vitro diagnostic assay from a clinical sample. This instrumentation is intended for use with specific IVD cleared or approved assays citing its use, to measure multiple similar analytes that establish a single indicator to aid in diagnosis.

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The eSensor® Warfarin Sensitivity Saliva Test is an in vitro diagnostic test for the detection and genotyping of the *2 and *3 alleles of the cytochrome P450 (CYP450) 2C9 gene locus and the Vitamin K epoxide reductase C1 (VKORC1) gene promoter polymorphism (-1639G>A) from genomic DNA of human saliva samples collected using the Oragene® Dx Device, as an aid in the identification of patients at risk for increased warfarin sensitivity.

The eSensor® Warfarin Sensitivity Saliva Test is a multiplex microarray-based genotyping test system. It is based on the principles of competitive DNA hybridization using a sandwich assay format, wherein a single-stranded target binds concurrently to sequence-specific solution-phase signal probe and solid-phase electrode-bound capture probe. The test employs polymerase chain reaction amplification, exonuclease digestion and hybridization of target DNA. In the process, the double stranded PCR amplicons are digested with exonuclease to generate single stranded DNA suitable for hybridization. Hybridization occurs in the eSensor XT-8 Cartridge (described below) where the singlestranded target DNA is mixed with a hybridization solution containing labeled signal probes. During hybridization, the target DNA binds to a complementary, single-stranded capture probe immobilized on the working electrode surface. Single-stranded signal probes (labeled with electrochemically active ferrocenes) bind to the target adjacent to the capture probe. When inserted into the eSensor XT-8 instrument (described below), simultaneous hybridization of target to signal probes and capture probe is detected by alternating current voltammetry (ACV). Each pair of working electrodes on the array contains a different capture probe, and sequential analysis of each electrode allows genotyping of multiple mutations or polymorphisms. The Assay Cartridge (eSensor XT-8 Cartridge): The eSensor XT-8 cartridge device consists of a printed circuit board (PCB) with a multi-layer laminate and a plastic cover that forms a hybridization chamber has a volume of approximately 140 µl. The cartridge consists of a diaphragm pump and check valves (microfluidic components) that circulate the hybridization solution in the hybridization chamber when inserted into the eSensor XT-8 instrument. The PCB chip consists of an array of 72 gold-plated working electrodes, a silver/silver chloride reference electrode, and two gold-plated auxiliary electrodes. Each working electrode has a connector contact pad on the opposite side of the chip for electrical connection to the eSensor XT-8 instrument. Each electrode is modified with a multicomponent, self-assembled monolayer that includes presvnthesized oligonucleotide capture probes specific for each polymorphic site on the test panel and insulator molecules. The cartridge also contains an electrically erasable programmable read-only memory component (EEPROM) that stores information related to the cartridge (e.g., assay identifier, cartridge lot number, and expiration date). The eSensor XT-8 Instrument (Same as cleared under k073720): The eSensor XT-8 is a clinical multiplex instrument that has a modular design consisting of a base module and one, two, or three cartridge-processing towers containing 8, 16, or 24 cartridge slots, respectively. The cartridge slots operate independently of each other. Any number of cartridges can be loaded at one time, and the remaining slots are available for use while the instrument is running. The base module controls each processing tower, provides power, and stores and analyzes data. The base module includes the user interface, and a 15-in. portrait-orientation display and touch panel. The instrument is designed to be operated solely with the touch screen interface. Entering patient accession numbers and reagent lot codes can be performed by the bar code scanner, the touch screen, or uploading a text file from a USB memory stick. Each processing tower consists of eight cartridge modules, each containing a cartridge connector, a precision-controlled heater, an air pump, and electronics. The air pumps drive the diaphragm pump and valve system in the cartridge, eliminating fluid contact between the instrument and the cartridge. The pneumatic pumping enables recirculation of the hybridization solution allowing the target DNA and the signal probes to hybridize with the complementary capture probes on the electrodes. The diaphragm pump in the cartridge is connected to a pneumatic source from the eSensor XT-8 instrument and provides unidirectional pumping of the hybridization mixture through the microfluidic channel during hybridization. Using microfluidic technology to circulate the hybridization solution minimizes the unstirred boundary layer at the electrode surface and continuously replenishes the volume above the electrode that has been depleted of complementary targets and signal probes. The XT-8 instrument provides electrochemical detection of bound signal probes by ACV and subsequent data analysis and test report generating functions. All hybridization, ACV scanning and analysis parameters are defined by a scanning protocol loaded into the XT-8 Software, and then specified for use by the EEPROM on each cartridge. The Assay Kit: The Warfarin Sensitivity Saliva Test consists of the test cartridge and the following components: 1) PCR REAGENTS consisting of: PCR Mix [PCR buffer containing primers and dNTP mixture (dCTP, dGTP, dATP, and dUTP)], MgCl2 thermostable DNA polymerase (Taq Polymerase ); and 2 GENOTYPING REAGENTS consisting of: lambda exonuclease, signal probes and hybridization buffer ingredients (Buffer-1 and Buffer-2).

The BeadXpress® System is an in vitro diagnostic device intended for the simultaneous detection of multiple analytes in a DNA sample utilizing VeraCode holographic microbead technology. The BeadXpress System consists of the BeadXpress Reader and VeraScan software.

The BeadXpress® System is an open platform fluidic microbead reader which includes a dual-color laser detection system that enables optical scanning of multiplexed assays developed using the VeraCode digital microbead technology and VeraScan 2.0 software. The instrument performs a routine set of operating steps: Reader Initialization, Fluidic Initialization, Scanning, Data Consolidation and Flushing. Hardware is contained within a single instrument housing. The system consists of four sub-systems (fluidics, opto-mechanical, motion and electrical) that interact with each other to provide the desired results. The fluidic system consists of the parts that move fluids and beads through the system as well as the key groove plate upon which the beads lay to be scanned. The optomechanical system contains the two lasers and all the optical components that are involved with the optical alignment and delivery of the beams to the beads and collection of the signals generated. This motion system contains all the hardware that is involved with the physical movement of the internal parts of the reader and utilizes four major axes to control the movement and spacial orientation of the specific sub-systems. The electrical system contains all the electronic components that are responsible for control of the individual components and system overall. The VeraScan software is installed on a PC directly connected to the BeadXpress Reader. It is used for operating the BeadXpress Reader and through the use of software modules, analyzing the scan results and genotype calls.

The Applied Biosystems 7500 Fast Dx Real-Time PCR Instrument with the SDS Software version 1.4 is a real-time nucleic acid amplification and detection system that measures nucleic acid signals from reverse transcribed RNA and converts them to comparative quantitative readouts using fluorescent detection of dual-labeled hydrolysis probes. The 7500 Fast Dx is to be used only by technologists trained in laboratory techniques, procedures and on use of the analyzer.

The AB 7500 Fast Dx RT-PCR instrument integrates a thermal cycler, a fluorimeter and application specific software. The instrument houses the thermal cycler and the fluorimeter, while the application software is run on a PC that is attached to the instrument. Samples are placed in a tube strip or 96-well low-head space plate that is moved to a Peltier-based thermal block and positioned relative to the optics using a tray loading mechanism. Excitation for all samples is provided by a halogen tungsten white source that passes through 5 switchable excitation filters prior to reaching the sample. Fluorescence emission is then detected through 5 color emissions filter wheel to a charge coupled device (CCD) camera. The instrument is designed to complete quantitative RT-PCR runs in about 40 minutes. The Sequence Detection Software (SDS) version 1.4 for the 7500 Fast Dx Instrument is used for instrument control, data collection and data analysis. The software can measure cycle-by-cycle real-time signals from the sample. The software provides a variety of tools to help the user analyze the data extracted from the samples. The software also provides lamp-life monitoring and other instrument maintenance information. The software runs as an application on Windows XP platform. Changes to the Dx software are subject to change control in accordance with 21 CFR Part 820.40.

The Affymetrix GeneChip® Microarray Instrumentation System consisting of GeneChip® 3000Dx scanner with autoloader, FS450Dx fluidics station and GCOSDx software is intended to measure fluorescence signals of labeled DNA and RNA target hybridized to GeneChip® arrays.

Affymetrix GeneChip® Microarray Instrumentation System consisting of GeneChip® 3000Dx scanner with autoloader, FS450Dx fluidics station and GCOSDx software.