Test your IGF-1 LR3

What is tested

• Identity, purity and amount

  Price confirmed at launch

  • Identity: is the molecule in the vial the one on the label
  • Purity: HPLC peak area percentage
  • Amount: measured milligrams against the label claim

  Turnaround: Confirmed when the partner lab is signed

• Identity, purity, amount and endotoxin

  Price confirmed at launch

  • Everything in the standard package
  • Bacterial endotoxin by LAL assay

  Turnaround: Confirmed when the partner lab is signed

• Endotoxin only

  Price confirmed at launch

  • Bacterial endotoxin by LAL assay
  • Does not establish identity, purity or amount

  Turnaround: Confirmed when the partner lab is signed

Method

Identity

Mass spectrometry, looking for the mass of the molecule named on the label.

Purity

HPLC with UV detection, reported as the main peak's share of total peak area.

Amount

HPLC quantitation against a reference standard, reported in milligrams per vial.

Analysed by

Partner laboratory to be announced

Full methods/IGF-1 LR3: identity card and what usually goes wrong

Sample requirements

• One sealed, unopened vial, with its label intact. Opened vials cannot be tested because the contents may have changed.
• A clear photo of the label and batch code before you send it.
• Any label amount can be tested.
• Tell us where you bought it. The vendor name stays private unless you choose a public record.

What a IGF-1 LR3 test often catches

• Misfolded disulfide isomers with the same mass.
• Other IGF-I analogues under similar names.
• A chemically cleavable Asn-Gly junction.
• Three methionines and other protein variants.