The test list for a recombinant growth factor, line by line

Published 26 October 2026 · REVIVE LAB UAE Research Desk · 5 min read
A complete certificate for IGF-1 LR3 answers five questions. Identity: observed mass against calculated, and ideally the first amino-terminal residues. Purity: main-peak percentage by reversed-phase chromatography, which resolves the swap isomer and oxidised forms, and monomer percentage by size exclusion, which counts aggregates. Appearance on a gel. Process impurities: endotoxin per microgram, host-cell protein, residual DNA. Activity: a cell-based bioassay where the supplier runs one. A certificate carrying only HPLC purity has answered one of the five.

Identity and purity lines

Mass confirms the 83-residue chain and the disulfide state. Amino-terminal sequence confirms the extension. Reversed-phase purity is the headline figure and should state the method, since the isomer separation depends on it. Size exclusion is the line most often absent and the one that reports aggregation.

Amino acid analysis, where run, gives protein content independent of water and counterion.

Process and safety lines

Endotoxin is essential for a culture reagent made in E. coli. Host-cell protein and residual DNA are the recombinant-specific impurities and distinguish this certificate from a synthetic peptide certificate. Sterility is not expected for research-grade material and should not be implied.

Water and counterion content complete the account of what the gross mass contains.

The activity line

A proliferation bioassay with a half-maximal effective concentration against a reference confirms the protein is folded and active. It is the one line that tests function rather than composition. Where it is absent, the chemical lines imply activity without proving it. The catalogue batch documentation states which of these tests were performed.

IGF-1 LR3 is supplied by REVIVE LAB UAE for laboratory research use only, with identity and purity documented for the batch. It is not for human or veterinary use, and no dosing, administration or protocol guidance is provided.

What it costs

FormatStrengthPriceAvailability
IGF-1 LR3 Pack1 mgAED 650In stock

Delivery is AED 40 flat and free on orders over AED 700. Payment is cash on delivery anywhere in the UAE, or USDT (TRC20) in advance, which takes 5% off the order total.

Frequently asked

Identity and purity lines?

Mass confirms the 83-residue chain and the disulfide state. Amino-terminal sequence confirms the extension. Reversed-phase purity is the headline figure and should state the method, since the isomer separation depends on it. Size exclusion is the line most often absent and the one that reports aggregation.

Does REVIVE LAB UAE provide dosing guidance?

No. REVIVE LAB UAE supplies research materials and provides no dosing, administration or protocol guidance of any kind. Every product is sold for laboratory research use only and is not for human or veterinary consumption.

How fast is delivery in the UAE?

Stock is held in Dubai. An order confirmed before 4 PM Dubai time is dispatched the same working day, reaching Dubai and Abu Dhabi the same day and the remaining emirates within 24 hours. Delivery is AED 40 flat and free over AED 700.

IGF-1 LR3 Pack — in stock, dispatched from Dubai
HPLC-verified, lot certificate on every carton, 24-hour delivery nationwide. Browse the catalogue → All peptides UAE

Related reading

Supplied for laboratory research use only. Not for human or veterinary consumption. REVIVE LAB UAE provides no dosing, administration or protocol guidance.