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Moles, molecules and why growth factors come in small vials

Published 26 October 2026 · REVIVE LAB UAE Research Desk · 5 min read
Dividing 1 mg by 9,111 daltons gives about 110 nanomoles, roughly 6.6 times ten to the sixteenth molecules. Growth factors act on cells at nanogram-per-millilitre concentrations, as the culture literature reports, so a milligram is enough for very large volumes of medium. By comparison the somatropin pack at 24 mg is about 1,085 nanomoles and the Retatrutide pack at 20 mg about 4,200. The 1 mg vial is small in mass and large in molecules, which is the normal scale for this product class.

The arithmetic

Amount in moles is mass divided by molar mass. For a 9,111 dalton protein, 1 mg is 1 divided by 9,111 millimoles, which is 0.11 micromoles or 110 nanomoles. Multiplying by the Avogadro constant gives the molecule count. Net protein content on the certificate adjusts this slightly, since gross mass includes water and counterion.

The same arithmetic for the 50 mg GHK-Cu pack gives about 123 micromoles, a thousand times more molecules, because the tripeptide is so small.

Why growth factors are supplied this way

A receptor agonist acting at subnanomolar concentration needs very little material per experiment. Culture-media suppliers sell LR3 in milligram and sub-milligram quantities for the same reason. Larger vials would be slower to use and the solution less stable over the time it took.

This is a statement about the product class, not a volume or concentration for anything.

Reading the figure

The 1 mg on the label is gross mass of the lyophilised solid. The certificate states protein content; the pack page states the mass. Neither is a quantity for use.

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

The arithmetic?

Amount in moles is mass divided by molar mass. For a 9,111 dalton protein, 1 mg is 1 divided by 9,111 millimoles, which is 0.11 micromoles or 110 nanomoles. Multiplying by the Avogadro constant gives the molecule count. Net protein content on the certificate adjusts this slightly, since gross mass includes water and counterion.

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

→ IGF-1 LR3 Pack — 1 mg → Net peptide content versus gross mass → Reading the IGF-1 LR3 pack page

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