2x 混合物含有 SYBR™ GreenER™ 染料、AmpliTaq™ DNA 聚合酶 UP、含 dUTP/dTTP 混合物的 dNTP、不耐热性 UDG、ROX 惰性参比染料和经优化的缓冲液组分。含有 1 X 1 mL 管,足以进行 100 次 20 µL 反应(每次反应 10 µL 预混液)。在 2–8°C 下储存。
保证的下限有效期为 60 天(确切的有效期已印在产品和 CofA 上)。
有关 StepOne 和 StepOnePlus 系统的推荐引物浓度,请参阅用户指南。
常见问题解答 (FAQ)
What can I do to improve the sensitivity of my qPCR assay?
If you are targeting a low-abundance gene, you may have trouble getting Ct values in a good, reliable range (Ct > 32). To increase the sensitivity of the assay, you may want to consider the following:
- Increase the amount of RNA input into your reverse transcription reaction, if possible
- Increase the amount of cDNA in your qPCR reaction (20% by volume max)
- Try a different reverse transcription kit, such as our SuperScript VILO Master Mix, for the highest cDNA yield possible
- Consider trying a one-step or Cells-to-CT type workflow (depending on your sample type)
How do I set the baseline for my qPCR experiment?
Most times your instrument software can automatically set a proper baseline for your data. Check out our short video, Understanding Baselines, for more information on how to set them (https://www.youtube.com/watch?feature=player_embedded&v=5BjFAJHW-bE).
How do I set the threshold for my qPCR experiment?
In most cases your instrument software can automatically set a proper threshold for your data. Check out our short video, Understanding Thresholds, for more information on how to set them (https://www.youtube.com/watch?feature=player_embedded&v=H_xsuRQIM9M).
I am not getting any amplification with my TaqMan Assay or SYBR Green primer set. What is causing this?
There could be several reasons for no amplification from an assay or primer set. Please see these examples and suggested solutions in our Real-Time Troubleshooting Tool (https://www.thermofisher.com/us/en/home/life-science/pcr/real-time-pcr/qpcr-education/real-time-pcr-troubleshooting-tool/gene-expression-quantitation-troubleshooting/no-amplification.html) for more details.
I am getting amplification in my no-template control (NTC) wells in my qPCR experiment. What is causing this?
There could be several reasons for amplification in a NTC well. Please see these examples and suggested solutions in our Real-Time Troubleshooting Tool (https://www.thermofisher.com/us/en/home/life-science/pcr/real-time-pcr/qpcr-education/real-time-pcr-troubleshooting-tool/gene-expression-quantitation-troubleshooting/amplification-no-template-control.html) for more details.