FAQ-589
Why does my realtime PCR assay quality decrease over time?
Make sure that template, primers, probes, and amplification reagents are stored correctly and avoid multiple freeze–thaw cycles for oligonucleotides and template. Check the performance of your real-time instrument as some instruments require the halogen lamp to be frequently replaced. Lasers must also be replaced occasionally.
Related products
QuantiFast Pathogen +IC Kits
The QuantiFast Pathogen +IC Kits are designed for sensitive and rapid real-time PCR or one-step RT-PCR detection of pathogen nucleic acids using sequence-specific probes. To enable high process safety through correct interpretation of negative detection results, each kit contains reagents for multiplex real-time detection of up to 4 user-defined pathogen targets (e.g., virus, bacteria, fungi etc.) plus the Internal Control (IC). Two kit formats are available: The QuantiFast Pathogen RT-PCR +IC Kit for detection of viral RNA, which contains an internal RNA control template, plus the Internal Control primer/probe set, or the QuantiFast Pathogen PCR +IC Kit for detection of viral, bacterial, or fungal DNA, which contains an internal DNA control template, plus the Internal Control primer/probe set. With both kits, ROX is supplied in 2 tubes of different concentrations, enabling use on virtually any real-time instrument. For convenience, the master mix can be stored at 2–8°C.
QuantiFast Multiplex PCR Kits
QuantiFast Multiplex PCR Kits enable fast and reliable quantification of up to 4 cDNA or gDNA targets in a single tube by multiplex, real-time PCR or two-step RT-PCR. Q-bond technology and an optimized master mix promote fast multiplex real-time PCR, not only on fast cyclers with short ramping times, but also on standard cyclers. The combination of a hot start and a unique PCR buffer system in the ready-to-use master mix ensures highly sensitive qPCR on any real-time cycler without the need for optimization. Two kit formats are available: the QuantiFast Multiplex PCR Kit for cyclers that require ROX dye for fluorescence normalization, and the QuantiFast Multiplex PCR +R Kit for all other cyclers. For convenience, the master mix can be stored at 2–8°C.
IMPORTANT NOTE: As announced earlier, the production of the QuantiFast kits has been discontinued since mid-2021. Hence, these products will be available only until stocks last. Visit the product page of the successor kit to view improved features or to request a trial kit.
For more information and FAQs on this transition, visit: www.qiagen.com/PCRresource.
QuantiFast Probe PCR Kits
QuantiFast Probe PCR Kits deliver fast and sensitive quantification of gDNA and cDNA targets by real-time PCR and two-step RT-PCR using sequence-specific probes. Q-bond technology and an optimized master mix enable shorter real-time PCR run times, not only on fast cyclers with short ramping times, but also on standard cyclers. The combination of a hot start and a unique PCR buffer system in the ready-to-use master mix ensures highly sensitive qPCR on any real-time cycler without the need for optimization. Two kit formats are available: the QuantiFast Probe PCR Kit for cyclers that require ROX dye for fluorescence normalization, and the QuantiFast Probe PCR +ROX Vial Kit for all other cyclers. For convenience, the master mix can be stored at 2–8°C.
IMPORTANT NOTE: As announced earlier, the production of the QuantiFast kits has been discontinued since mid-2021. Hence, these products will be available only until stocks last. Visit the product page of the successor kit to view improved features or to request a trial kit.
For more information and FAQs on this transition, visit: www.qiagen.com/PCRresource.
QuantiTect RT-PCR Kits
QuantiTect RT-PCR Kits enable sensitive quantification of RNA targets by real-time one-step PCR using sequence-specific probes or SYBR Green I detection. The kits also allow reliable quantification of up to 5 RNA targets in a single tube by multiplex, real-time one-step RT-PCR. The combination of a hot start and a unique PCR buffer system in the ready-to-use master mix ensures highly sensitive qRT-PCR on any real-time cycler without the need for optimization. The dNTP mix includes dUTP, allowing optional treatment with UNG. For convenience, the master mixes in QuantiTect one-step RT-PCR kits can be stored at 2–8°C. Two kit formats are available for multiplex RT-PCR using sequence-specific probes: the QuantiTect Multiplex RT-PCR Kit for cyclers that require ROX dye for fluorescence normalization, and the QuantiTect Multiplex RT-PCR NoROX Kit for all other cyclers. The QuantiTect SYBR Green RT-PCR Kit is supplied with an optimized RT mix for efficient and sensitive reverse transcription over a wide range of RNA template amounts.
QuantiTect PCR Kits
QuantiTect PCR Kits (qPCR kits) enable sensitive quantification of gDNA and cDNA targets by real-time PCR and two-step RT-PCR using sequence-specific probes or SYBR Green I detection. The real-time PCR kits also allow reliable quantification of up to 5 gDNA or cDNA targets in a single tube by multiplex, real-time PCR or two-step RT-PCR. The combination of a hot start and a unique PCR buffer system in the ready-to-use master mix ensures highly sensitive qPCR on any real-time cycler without the need for optimization. The dNTP mix includes dUTP, allowing optional treatment with UNG. For convenience, the master mixes in QuantiTect PCR Kits can be stored at 2–8°C. Two kit formats are available for multiplex PCR using sequence-specific probes: the QuantiTect Multiplex PCR Kit for cyclers that require ROX dye for fluorescence normalization, and the QuantiTect Multiplex PCR NoROX Kit for all other cyclers.