Why somatropin is quoted in two different units

Published 24 October 2026 · REVIVE LAB UAE Research Desk · 5 min read
International units are a potency measure defined against a reference preparation; milligrams are a mass. For somatropin this catalogue uses 3 IU per mg, so the 24 mg vial is stated as 72 IU. The two figures describe the same vial.

Two different kinds of number

A milligram is how much protein is present. An international unit is a unit of biological activity, fixed by comparison with an agreed reference preparation. They answer different questions, and historically potency was the one that could be measured reliably.

That history is why both persist on labels long after mass could be determined directly.

The conversion this catalogue uses

Three IU per milligram. On that basis the 24 mg vial is 72 IU, and the two-vial pack listed elsewhere at 144 IU is 48 mg. Both numbers describe the same material, and the pages state whichever is on the carton.

Conversions quoted elsewhere have historically differed, because they trace to different reference preparations. A figure converted under one convention and compared against a figure converted under another will not agree, and neither is wrong.

Why it causes trouble

Comparing suppliers on price per IU against price per mg, without checking which conversion each used, produces a comparison that is not about price at all. The same vial can be quoted two ways and look like two products.

The safe habit is to compare mass to mass, and to treat an IU figure as meaningful only alongside the convention that produced it.

What is on the carton

The HGH Somatropin Pack is labelled 24 mg, which this catalogue states as 72 IU. Identity is confirmed by mass spectrometry and purity by HPLC for the batch.

Research use only. REVIVE LAB UAE provides no dosing or protocol guidance of any kind.

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

Two different kinds of number?

A milligram is how much protein is present. An international unit is a unit of biological activity, fixed by comparison with an agreed reference preparation. They answer different questions, and historically potency was the one that could be measured reliably.

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.