SpikeTides™ are the inexpensive and reliable source of custom stable-isotope-labeled peptides (SIL peptides or heavy peptides). SpikeTides™ are also available unlabeled peptides (e.g. proteotypic peptides) for relative protein quantification by mass spectrometry-based assays in targeted proteomics.
Also have a look at our other Proteomics Libraries & Kits and at our SpikeMix Reference Peptide Pools!
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