15% OFF HGH – 24iu (Research Use Only)
Research-grade Human Growth Hormone (HGH), available in two vial sizes. Lyophilized. Independent lab result for the 24 IU vial, batch PTW-HGH8-2608-001: 93.151% purity, below our 95% standard, 10.12 mg (30.36 IU) per vial (Janoshik Analytical, task #243314).
Availability: In stock
3–4 vials — 5% off · 5–9 vials — 10% off · 10+ vials — 15% off
Applied automatically in the cart. Combines with a discount code up to 20% off in total, and stacks on top of the subscription discount.
Research Disclaimer: All products currently listed on this site are for research purposes only.
Independent lab result · batch PTW-HGH8-2608-001
HGH 24IU. Tested by Janoshik Analytical (task #243314), analysis conducted 23 Oct 2026. The sample was pulled from our own stock, submitted and paid for by Portal to Wellness, and the report names us as the client.
- Identity: human growth hormone (rHGH), confirmed by HGH analysis
- Measured content: 10.12 mg / 30.36 IU per vial (labelled 24 IU)
- Purity: 93.151% (HPLC)
- This batch is below the 95% purity level in our standard. We are selling it with this exact figure published while we work with our supplier on the result. See the standard on our Lab Testing page.
View and verify the full report on Janoshik’s site →
This result applies to batch PTW-HGH8-2608-001. The batch number is printed on the vial label. See all published results on our Lab Testing & Verification page.
Compare HGH Sizes
Two vial sizes of the same compound.
| Product | Size | Price |
|---|---|---|
| HGH – approx. 3.3mg | approx. 3.3mg/vial | $32.00 |
| HGH – approx. 8mg | approx. 8mg/vial | $69.00 |
Overview
Human Growth Hormone (somatropin, rhGH) is a 191-amino-acid pituitary hormone of the GH/IGF-1 axis and one of the most extensively researched peptide hormones in biomedical science. As a 191-amino acid protein secreted by the anterior pituitary, GH mediates a diverse array of anabolic, lipolytic, and metabolic effects primarily through direct receptor activation at GH receptor (GHR)-expressing tissues and indirectly through IGF-1 production stimulated predominantly in the liver.
What It Is
Somatropin (recombinant human growth hormone, rhGH) is a 191-amino acid single-chain polypeptide identical in sequence to endogenous pituitary-derived human GH, with two disulfide bonds. Molecular formula: C₉₉₀H₁₅₂₈N₂₆₂O₃₀₀S₇, MW ~22,124 Da. CAS number: 12629-01-5. It signals through the GH receptor (GHR) as a 2:1 receptor:hormone complex, activating JAK2/STAT5 signaling, Ras/MAPK, and PI3K/Akt pathways.
Key Research Applications
- GH receptor (GHR) binding, dimerization, and JAK2/STAT5 signaling pathway research
- IGF-1 axis stimulation and liver GH receptor sensitivity research in animal models
- Lipolysis, fatty acid mobilization, and adipose tissue biology studies
- Protein-synthesis assays in cell culture
- Growth plate chondrocyte biology and longitudinal bone growth research
- GH deficiency modeling and IGF-1 restoration pharmacodynamics in animal models
- Metabolic syndrome — insulin resistance interactions with the GH/IGF-1 axis
- Cardiac function, myocardial hypertrophy, and cardiovascular GH receptor biology
Technical Specifications
| Protein | Somatropin (recombinant human GH) |
| Amino Acids | 191 |
| Molecular Weight | ~22,124 Da |
| CAS Number | 12629-01-5 |
| Mechanism | GH Receptor (GHR) Agonist — JAK2/STAT5, PI3K/Akt pathways |
| Purity | 93.151% measured for batch PTW-HGH8-2608-001 (supplier specification: ≥98%) |
| Form | Lyophilized powder |
| Storage | −4 °F long-term |
FOR RESEARCH USE ONLY. Not intended for human or veterinary consumption, medical diagnosis, treatment, or prevention of any disease or condition. This product has not been evaluated by the FDA or any regulatory agency. Must be handled by qualified research personnel in a compliant laboratory setting. These statements have not been evaluated by the Food and Drug Administration.
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- Processing: Orders ship within 1–2 business days
- Domestic delivery: 3–5 business days via USPS Priority / UPS Ground
- Free shipping on orders over $100
- Temperature handling: Cold-chain packaging available on request for lyophilized peptides
- Tracking: Emailed automatically at time of dispatch
- Store lyophilized (dry) peptides at −4 °F for long-term stability
- Protect from light and moisture at all times
- Do not freeze
- Where the Storage row in the product specification above differs, follow the specification
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