One-Step RT-qPCR Kits

What Are One-Step RT-qPCR Kits?

A one-step RT-qPCR kit combines reverse transcription and real-time quantitative PCR in a single tube and buffer, using a temperature-activated reverse transcriptase paired with a hot-start Taq polymerase and a fluorescent detection chemistry - either an intercalating dye such as SYBR Green or a hydrolysis probe system such as TaqMan. The combined format allows room-temperature reaction setup, with reverse transcription and qPCR proceeding sequentially within the same thermal cycling protocol. Choose a SYBR Green one-step RT-qPCR kit for flexible, cost-effective RNA quantification across many targets; choose a probe-based one-step kit when higher specificity or multiplexing of several targets in one well is required.

What you will find:

• Single-tube reverse transcription and real-time PCR workflows using one-step RT-qPCR kits from ZymoScript and Accuris qMAX
• SYBR Green and hydrolysis probe-based detection chemistries for RNA quantification and gene expression analysis
• One-step RT-qPCR master mix systems that reduce sample handling and streamline assay setup
• Probe-based RT-qPCR kits suitable for target-specific detection workflows
• Green dye-based RT-qPCR kits for real-time amplification and quantification of RNA targets

How to Choose a One-Step RT-qPCR Kit

Detection Chemistry
SYBR Green-based one-step RT-qPCR kits use an intercalating dye for broad, cost-effective quantification, with specificity driven by primer design. Probe-based one-step kits use TaqMan-style or other sequence-specific probes, offering higher specificity and multiplexing of multiple targets -- including via Scorpions primers or other probe formats -- in a single reaction.

Reverse Transcriptase and Activation Mechanism
Many one-step RT-qPCR kits use a temperature-activated or aptamer-based reverse transcriptase with dual enzyme-activity control, allowing room-temperature reaction setup without premature activity. Upon heating, both the reverse transcriptase and hot-start Taq polymerase reach their working states in a coordinated activation step.

Buffer System Additives
Specialised buffer additives -- such as ion combinations that promote specific primer annealing, or compounds that reduce annealing and extension times -- can improve specificity, sensitivity, and overall reaction speed, particularly useful for difficult templates or time-sensitive workflows.

Internal Control Options
Some one-step RT-qPCR kits offer an optional internal control RNA that can be co-amplified to monitor successful reverse transcription and amplification independently of the target signal, useful for troubleshooting and quality control in diagnostic-style workflows.

Instrument Compatibility
Confirm reference dye requirements (commonly ROX) and detection channel compatibility against your specific real-time PCR instrument before selecting a kit, since some formulations are offered with and without reference dye for compatibility across different instrument platforms.

Specifications Context

The combined one-step RT-qPCR reaction proceeds through reverse transcription at a temperature suited to the included reverse transcriptase (commonly in the 50-55 °C range for engineered, higher-thermostability enzymes), followed by a polymerase activation step (commonly around 95 °C) that simultaneously inactivates the reverse transcriptase and activates the hot-start Taq polymerase before standard qPCR cycling begins. Internal control RNA, when included, is typically detected in a separate fluorescence channel from the target, allowing simultaneous confirmation of reaction success and quantification of the target from the same well. One-step RT-qPCR kits are typically stored at −20 °C to −30 °C and protected from light; lot-specific CoAs documenting performance and quality control are available on request.

Contact the expert team at MBP today and get optimized One-Step RT-PCR kits for your lab.