HCG Peptide Dosage Guide (5000iu & 10000iu)

Dosing — 2026-10-26

Once researchers know what the HCG peptide does, the next search is always dosage. HCG is sold by international units (IU), not milligrams, which makes the reconstitution math slightly different from a standard peptide. This guide walks through the numbers for both the 5000iu and 10000iu vials.

IU, Not Milligrams

HCG potency is measured in international units. Your vial is a fixed total IU, and your dose is a fraction of that total. The job of reconstitution is to turn "X IU" into a repeatable number of units on an insulin syringe.

Reconstituting the 5000iu Vial

A clean, round concentration:

• Add 1mL bacteriostatic water to a 5000iu vial → 5000 IU/mL
• On a U-100 insulin syringe, 10 units (0.1mL) draws 500 IU
• 20 units (0.2mL) draws 1000 IU

Prefer a more dilute, easier-to-read draw? Add 2mL instead → 2500 IU/mL, so 20 units = 500 IU.

Reconstituting the 10000iu Vial

• Add 2mL bacteriostatic water to a 10000iu vial → 5000 IU/mL (same per-unit math as the 1mL/5000iu mix above)
• 10 units (0.1mL) draws 500 IU

Matching the two vials to the same concentration means your dosing table doesn't change when you switch vial sizes. Pick up bacteriostatic water if you need it.

Low-Dose Context From the Literature

The most-cited human hCG study used a deliberately low-dose regimen to maintain testicular function — a reminder that research protocols trend conservative, not maximal. Always anchor a protocol to the published range rather than guessing upward.

Storage After Mixing

• Refrigerate reconstituted hCG immediately (2–8°C)
• Never freeze a reconstituted vial — freeze-thaw cycles degrade the hormone
• Keep the lyophilized vial cool and out of light until you mix it

A Repeatable Workflow

1. Decide your target IU per dose from the literature
2. Choose a water volume that makes that dose a round number of syringe units
3. Confirm the concentration before every draw
4. Log each draw so the vial's remaining IU is always known

For buying considerations and quality checks, see our HCG peptide reviews guide, and for pairing protocols, using HCG with GLP compounds.

References

• NCBI Bookshelf / StatPearls — Human Chorionic Gonadotropin (.gov)
• Coviello AD et al., *J Clin Endocrinol Metab* (2005) — Low-dose hCG maintains intratesticular testosterone (PubMed, .gov)
• University of Rochester Medical Center — HCG (Blood) Health Encyclopedia (.edu)

All products are for laboratory and research use only; none are FDA-approved or intended for human consumption.

Code PLATINUM25 takes 25% off at checkout. Every HCG vial ships with a batch-matched COA.

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.