The international standard behind the somatropin unit

Published 24 October 2026 · REVIVE LAB UAE Research Desk · 5 min read
Potency units for biologicals are defined by a World Health Organization international standard: a specific batch of material to which a unit value is assigned, against which other preparations are calibrated. For recombinant somatropin the standard assigns 3 IU per milligram of protein. The catalogue pack of 24 mg is therefore 72 IU, the retired 36 mg vial was 108 IU, and the retired two-vial pack at 144 IU was 48 mg.

What an international unit is

Historically potency of a biological was measured by bioassay, because the material could not be fully defined chemically. The unit was the activity of a defined amount of a reference preparation. As recombinant proteins became chemically defined, the unit was fixed to mass by assigning a value to a pure reference, which is what the somatropin standard does.

The international standard is held and distributed by a WHO custodian laboratory.

Why both units persist

Clinical practice grew up with IU, and the unit survives on labels and in the literature. Analytical work uses milligrams. The 3 to 1 ratio is a definition, not a measurement, so the conversion is exact for material calibrated against the standard.

Older pituitary-derived preparations had different, assay-based unit values, which is one reason historical figures do not convert cleanly.

The catalogue figures

Pack: 24 mg, 72 IU, one vial, with water. Retired entries: 36 mg (108 IU) loose vial; 144 IU as two 72 IU vials; 36 IU pre-filled pen. All follow the 3 IU per mg definition.

Somatropin 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
HGH Somatropin Pack24 mg (72 IU)AED 850In 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

What an international unit is?

Historically potency of a biological was measured by bioassay, because the material could not be fully defined chemically. The unit was the activity of a defined amount of a reference preparation. As recombinant proteins became chemically defined, the unit was fixed to mass by assigning a value to a pure reference, which is what the somatropin standard does.

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.

HGH Somatropin 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.