HCG 5000IU vs 10000IU: Which Vial for Your Research?

Buying Guide — 2026-10-02

HCG is sold in two common research sizes — 5000IU and 10000IU — and choosing between them comes down to how much your protocol will use, cost-per-unit, and the reconstituted shelf life. The hormone inside is identical; only the total international units per vial differ. Here is the side-by-side. For laboratory research use only.

Platinum Biolabs ships every HCG vial with a batch-matched COA, from a US facility. Code PLATINUM25 takes 25% off your order at checkout.

The Only Real Difference: Total Units

Both vials contain the same lyophilized human chorionic gonadotropin. The 10000IU vial simply holds twice the units. That changes three things: how many doses you get, cost-per-unit, and how you reconstitute it.

Side-by-Side

The 10000IU vial costs less per unit — you pay more up front but less per IU of hormone.

The Catch: Reconstituted Shelf Life

Here is the factor that makes this choice different from most "bigger is cheaper" decisions. Once reconstituted, HCG is generally used within about 30 days refrigerated. If you reconstitute an entire 10000IU vial at once but your protocol only uses a few thousand IU in a month, the ~30-day window — not the unit count — may govern, and some material could go to waste.

Two ways researchers handle this:

• Reconstitute in portions — keep most of the vial dry and mix only what the next ~30 days needs
• Match vial size to monthly use — if a month's protocol uses ≤5000 IU, the 5000IU vial may be the cleaner fit

Reconstitution Differences

At the same water volume, the 10000IU vial is twice as concentrated, so each syringe unit carries twice the IU. To get the same per-unit math as a 5000IU vial, add double the bacteriostatic water. See HCG 5000IU reconstitution and HCG 10000IU reconstitution for the exact tables.

Who Should Pick Which

Choose the 5000IU vial if - Your monthly research use is modest (≤5000 IU) - You want to minimize reconstituted waste - Lower up-front cost matters

Choose the 10000IU vial if - Your protocol uses higher amounts or runs longer - You want the best cost-per-unit - You will reconstitute in portions to respect the ~30-day window

Bottom Line

The hormone is identical; the 10000IU vial wins on cost-per-unit, but HCG's ~30-day reconstituted window means matching vial size to actual monthly use often matters more than raw price. For background on HCG's research applications, see HCG in research.

Code PLATINUM25 takes 25% off at checkout. Both the 5000IU and 10000IU vials ship with a batch-matched COA and US-based handling.

Disclaimer: All information presented in this article is for educational and informational purposes only. Platinum Biolabs does not promote or endorse the use of peptides for human consumption. All products sold by Platinum Biolabs are intended strictly for laboratory and research use only. Consult a qualified healthcare professional before making any health-related decisions.