What is HGH, and what does a search for an HGH peptide usually mean?
Somatropin is human growth hormone made by recombinant DNA technology: a protein of 191 amino acids, about 22,125 daltons, with the same sequence as the hormone from the human pituitary [1]. One labeled product, Humatrope, is a powder in a cartridge that is reconstituted with its own diluent and used in a matching pen [1]. PinPoint's library lists somatropin as FDA approved, logged by subcutaneous injection [2].
At 191 amino acids, somatropin is a protein rather than a short peptide. The compounds usually sold as HGH peptides are secretagogues and releasing-hormone analogues: sermorelin, ipamorelin, CJC-1295 without DAC and tesamorelin. They are separate compounds with their own sources, and none of them is a form of somatropin [2].
What does the somatropin label report?
The label describes each cartridge as 6 mg (18 IU), 12 mg (36 IU) or 24 mg (72 IU) of somatropin [1]. That is the figure this page uses: 3 IU per milligram, stated by the label itself, not borrowed from another product. After reconstitution the label lists concentrations of 2.08, 4.17 and 8.33 mg/mL for the three cartridges.
In its pharmacology section the label reports 75% absolute bioavailability after subcutaneous injection, a median time to peak of 4 hours in healthy adults, and a mean subcutaneous half-life of 3.8 hours, longer than after intravenous use because absorption from the injection site is slow [1]. The library's tracking input is 3 hours, taken from another somatropin label, and the somatropin guide explains that source [2].
Labeled indications cover growth failure in children and growth hormone deficiency in adults, and each indication carries its own weight-based dosing section [1]. Those sections are the place for an amount; this page reports units and arithmetic only.
| Compound | Status | Half-life input | Package example |
|---|---|---|---|
| Somatropin | FDA-labeled presentation | 3 h | 12 mg |
How do you convert somatropin IU to mg and to syringe units?
With the label's own equivalence, the conversion is a single multiplication: milligrams times 3 gives international units, and IU divided by 3 gives milligrams [1][3]. A 12 mg cartridge is therefore 36 IU, and 1 IU is about 0.333 mg.
Syringe units need the concentration. At the labeled 4.17 mg/mL, 0.1 mL holds 0.417 mg, which is 1.25 IU, and 0.1 mL sits at the 10 mark on a U-100 insulin syringe [3]. The figure repeats that arithmetic for the 2.08 and 8.33 mg/mL cartridges. This is a check on the numbers, not a substitute for the pen the label pairs with each cartridge.
The library has no reconstitution example for somatropin, so there is no compound calculator page; the general peptide calculator and the units to mg converter take any labeled amount and volume [2].
How is an IU-dosed compound logged in PinPoint?
Vial setup in PinPoint accepts a vial size in mg, mcg or IU with a water volume, and shows the concentration and the syringe units to draw [4]. Doses are then logged with compound, dose, site and pain level, so a somatropin vial can be set up in IU, the unit the label prints beside milligrams. Prefilled pens and vials can be tracked side by side, and a supply forecast estimates when stock runs out [4].
Each injection is logged with compound, dose, site and pain level, with daily or custom schedules and reminders at the time set [4]. The Home curve uses the library's 3 hour input to model levels between doses; modeled curves are mathematical visualizations of published population averages and do not account for individual variation [2][4]. A secretagogue such as ipamorelin is logged as its own compound with its own input, never folded into a somatropin entry.
Get PinPoint on the App StoreWhat do people ask about HGH and somatropin?
- What is HGH?
- HGH is human growth hormone. The approved medicine is somatropin, a recombinant protein of 191 amino acids with the same sequence as the hormone made by the pituitary gland.
- Is HGH a peptide?
- Somatropin is a 191 amino acid protein. Products searched as HGH peptides are usually secretagogues such as sermorelin, ipamorelin or CJC-1295, which are separate compounds.
- How many IU are in 1 mg of somatropin?
- The cited label lists 6 mg as 18 IU, 12 mg as 36 IU and 24 mg as 72 IU, which is 3 IU per milligram.
- How many units on a U-100 syringe is 1.25 IU of somatropin?
- At the labeled 4.17 mg/mL of the 12 mg cartridge, 1.25 IU is 0.417 mg in 0.1 mL, which is the 10 mark on a U-100 syringe.
- What is somatotropin?
- Somatotropin is another name for growth hormone. Somatropin is the name of the recombinant medicine, and both spellings point to the same hormone.
Where do these facts come from?
Sources are listed by kind: labels first, then peer-reviewed papers, then PinPoint's own library, arithmetic and app description. Library values were retrieved from the PinPoint application on 5 October 2026; vendor listings support package sizes only.
- Somatropin for injection prescribing information, cartridge presentations (DailyMed)Humatrope label. Each cartridge holds 6 mg (18 IU), 12 mg (36 IU) or 24 mg (72 IU); reconstituted 12 mg cartridge 4.17 mg/mL; subcutaneous half-life 3.8 hours; 191 amino acids.Retrieved 2026-10-05 · label
- PinPoint compound library, application recordsHalf-life inputs, routes, frequencies, package examples and confidence labels as stored in the iOS app library and mirrored in the peptide guides.Retrieved 2026-10-05 · library
- Unit conversion arithmeticConcentration = amount / volume; volume = amount / concentration; U-100 units = mL x 100; remaining fraction = 2^(-elapsed / half-life).Retrieved 2026-10-05 · arithmetic
- PinPoint App Store descriptionFeature wording from the approved application description, not pricing.Retrieved 2026-10-05 · app-description