Our absolute quantified peptides SpikeTides™_TQL PLUS are used as internal references for protein quantification (protein quantitation) in clinical proteomics. They are quantified with our proprietary QTag before delivery. Additionally you can perform an up-to-date peptide quantitation immediately before your experiment for clinical applications.
Our proprietary absolute peptide quantification (peptide quantitation) method overcomes the limitations of traditional methods such as limited accuracy and high costs:
- JPT’s QTag is a small chemical tag attached to the peptide
- QTag is released by trypsin and does not interfere with measurements
- Peptide quantification via HPLC-UV or HPLC-MS and UV
- Robust, reproducible & accurate method (variation CV= 5%)
- Validated in numerous peer-reviewed papers
- Lower cost than traditional methods
- Peptide quantitation immediately before your experiment possible
Also available:
- Peptide Pools for Targeted Proteomics - SpikeMix™
- Reference Peptides for Targeted Proteomics - SpikeTides™
- Absolute Quantified Peptides - SpikeTides™ TQL
Comparison of Absolute Quantified Peptides:
SpikeTidesTM_TQL | SpikeTidesTM_TQL PLUS | ||
---|---|---|---|
Quantification by HPLC-UV | X | X | |
Quantification by end-user possible |
X | ||
Amount | 5 x 1nmol | 5 x 10nmol | |
Isotopical purity | 99% | 99% | |
Incoming material inspection | X | X | |
Vendor qualification | X | X | |
Batch documentation & CoA | X | X | |
Optional: certified vials | X | ||
Optional: additional QC methods | X | ||
Select your Clinical Proteomics Peptides:
1. SpikeTides™_TQL PLUS
SpikeTides™_TQL PLUS are heavy labeled, absolute quantified, proteotypic peptides with a C-terminal QTag that is cleaved by tryptic digestion.
- Amount: 10 x 1 nmol/target peptide
- Purity: Purified
- Application: Absolute protein quantification in clinical applications
- Peptide quantitation immediately before your experiment possible
- Validated pooling service available
2. Maxi SpikeTides_TQL PLUS
Maxi SpikeTides™ Maxi SpikeTides™_TQL PLUS enable:
- Longer peptides
- Larger amount per peptide
- Guaranteed purity for each peptide
- Classical AAA quantification of peptides
- Validated pooling service available
Please inquire for your Maxi SpikeTides™ via email!
Loading...


Quality Assurance
All production is ISO 9001:2015 certified.