For Research Use Only. Not for use in diagnostic procedures. Others cobas HDV quant RUO RUO cobas® HDV PID00000823 Quantitative nucleic acid test for use on the cobas® 5800/6800/8800 systems 10070021190 KIT COBAS 58/68/8800 HDV 192T RUO KIT COBAS 58/68/8800 HDV 192T RUO 00875197007398 Reagents, kits 1 kit 192 tests true cobas® HDV for use on the cobas® 5800/6800/8800 Systems (cobas® HDV) is an in vitro nucleic acid amplification test for both the detection and quantitation of hepatitis D virus (HDV) RNA in human EDTA plasma or serum. cobas® HDV is intended for research use only and is not for use in diagnostic procedures. cobas® HDV can be used to support scientific research to understand the potential use of this biomarker. en cobas® HDV is based on fully automated sample preparation (nucleic acid extraction and purification) followed by PCR amplification and detection. The cobas® 5800/6800/8800 (x800) family of instruments includes three configurations with varying throughputs. The cobas® 6800/8800 systems are medium and high throughput configurations consisting of a sample supply module, the transfer module, the processing module, and the analytic module. The low-throughput cobas® 5800 configuration incorporates all functions in one integrated instrument with a smaller footprint. Automated data management is performed by the instrument software, which assigns test results for all tests as target not detected, < LLoQ (lower limit of quantitation), > ULoQ (upper limit of quantitation) or HDV detected, a value in the linear range LLoQ < x < ULoQ. Results can be reviewed directly on the system screen, and printed as a report. Nucleic acid from patient samples, external controls and added armored RNA (RNA-QS) molecules is simultaneously extracted. In summary, viral nucleic acid is released by addition of proteinase and lysis reagent to the sample. The released nucleic acid binds to the silica surface of the added magnetic glass particles. Unbound substances and impurities, such as denatured protein, cellular debris and potential PCR inhibitors are removed with subsequent wash reagent steps and purified nucleic acid is eluted from the magnetic glass particles with elution buffer at elevated temperature. Selective amplification of target nucleic acid HDV RNA from the sample is achieved by the use of organism-specific forward and reverse primers, which were selected to specifically hybridize to highly conserved regions of the HDV genome. The target and RNA-QS sequences are amplified simultaneously utilizing a universal PCR amplification profile with predefined temperature steps and number of cycles. A thermostable DNA polymerase enzyme is used for both reverse-transcription and amplification. The master mix includes deoxyuridine triphosphate (dUTP), instead of deoxythimidine triphosphate (dTTP), which is incorporated into the newly synthesized DNA (amplicon). Any contaminating amplicons from previous PCR runs are destroyed by the AmpErase enzyme [uracil-N-glycosylase], which is included in the PCR mix, when heated in the first thermal cycling step. However, newly formed amplicons are not destroyed since the AmpErase enzyme is inactivated once exposed to temperatures above 55°C. The cobas® HDV master mix contains detection probes which are specific for HDV and QS nucleic acid. The specific HDV and QS detection probes are each labeled with one of two unique fluorescent dyes which act as a reporter. Each probe also has a second dye which acts as a quencher. The fluorescent signals of the intact probes are suppressed by the quencher dye. During the PCR amplification step, hybridization of the probes to the specific single-stranded DNA template results in cleavage by the 5' to 3' nuclease activity of the DNA polymerase resulting in separation of the reporter and quencher dyes and the generation of a fluorescent signal. With each PCR cycle, increasing amounts of cleaved probes are generated and the cumulative signal of the reporter dye is concomitantly increased. Since the two specific reporter dyes are measured at defined wavelengths, simultaneous detection and discrimination of the amplified HDV RNA target and the QS are possible.   en