Pay in 4 interest-free payments of $6.41 Learn more
Ships within 48 hours · Estimated delivery Aug 20 - Aug 25
If you're ready to see which of our science-forward formulations might be the best fit for your unique needs, we invite you to take our Health Quiz today
There is no rule that says you must stack on day one, and the most sustainable approaches tend to build up rather than start at the top
It is a vital vitamin for the production and stability of collagen in our skin
What a COA (Certificate of Analysis) Should Include Identity Confirmation Mass spectrometry confirming the 9,111 Da molecular weight (70 amino acids total with the N-terminal extension) Amino acid sequence verification matching the LR3 modification (Arg at position 3, MFPAMPLSSLFVN extension) Purity Testing HPLC purity look for 98%+ purity The chromatogram should show a single dominant peak with minimal truncated-sequence or oxidized impurities Contamination Testing Endotoxin levels (critical this is injected intramuscular or subcutaneous) Residual solvent analysis Heavy metals screening Protein-Specific Tests (rare but ideal) Circular dichroism (CD) spectroscopy confirming secondary structure Bioactivity assay on MCF-7 or similar IGF-1-responsive cell line Most vendors skip the last category
US$ 22.08
US$ 26.52
US$ 27.22
US$ 22.55
US$ 26.46
US$ 24.92
