The Lab

Reconstitution guides, a growing peptide reference, and bench-ready calculators. For research and educational reference only.

Three-step diagram showing how to reconstitute lyophilized powder safely instead of buying risky pre-mixed peptides.
Pre-mixed peptides are a gamble you don't need to take

A pre-mixed peptide is a research compound the seller has already dissolved into liquid before shipping it to you, instead of sending it as a dry, lyophilized (freeze-dried) powder that... Read more...
A magnifying glass highlights a Gansulin pen's fixed cartridge beside a plain vial and syringe for custom dilution.
What pre-mixed peptide pens don't tell you about dilution

A pre-mixed peptide pen is a sealed glass cartridge of peptide and diluent combined before sale, housed in a pen with a click-dial plunger, sold as research hardware rather than... Read more...
A magnifying glass enlarges the Gansulin pen's dose window to show the precision required for the accuracy hack.
Peptide Pen Use: The Accuracy Hack Researchers Miss

A peptide pen is a precision laboratory tool for reconstituting peptides in a research setting. It draws a measured volume of diluent into a glass cartridge and dispenses it with... Read more...
Magnifying glass showing dead volume droplet on a Gansulin pen tip next to a fine syringe for metering comparison.
Peptide Pen Guide: Metal vs Plastic, Dead Volume & Metering

A peptide pen is a reusable, precision-machined metal instrument used in laboratory settings to meter a specific, repeatable volume of diluent into a vial during peptide reconstitution. In place of... Read more...
A Gansulin pen beside a cartridge with leftover liquid and an insulin syringe illustrating recovered dead volume.
Peptide Pen Dead Volume: Are You Wasting $100 of Your Vial?

Peptide pen dead volume is the small amount of reconstituted liquid that remains trapped inside the needle and cartridge tip after a draw is completed. It is a physical property... Read more...
A vial labeled Pemvidutide, a syringe, an unlabeled vial of water, and an ice pack on a lab bench.
Pemvidutide: Reference Overview and Reconstitution Notes

Pemvidutide is an investigational, lipidated GLP-1 and glucagon dual receptor agonist peptide studied in the context of metabolic and weight regulation and liver fat, and it is not FDA-approved. Read more...
A Pancragen vial undergoing reconstitution next to a timer, illustrating the passive dissolving phase.
Pancragen: Reference Overview and Reconstitution Notes

Pancragen is a synthetic short-chain peptide of the Khavinson bioregulator family, grouped with metabolic and endocrine research peptides, and is a research-only compound that is not FDA-approved. Read more...
An Ovagen vial, syringe, bacteriostatic water vial, notebook, pencil, and ice pack on a lab bench.
Ovagen: Reference Overview and Reconstitution Notes

Ovagen is a synthetic short-chain peptide of the Khavinson bioregulator family, grouped under liver and gastrointestinal tissue bioregulators, and it is a research-only compound that is not FDA-approved. Read more...
A vial of N-Acetyl Epitalon Amidate on a notebook next to a syringe, an unlabeled vial, and a thermometer.
N-Acetyl Epitalon Amidate: Reference Overview and Reconstitution Notes

N-Acetyl Epitalon Amidate is a terminally modified synthetic tetrapeptide of the Khavinson bioregulator family, grouped with anti-aging and longevity peptides, and it is a research-only compound that is not FDA-approved. Read more...
A labeled Melanotan I vial, an unlabeled liquid vial, and a syringe on a sunlit lab bench.
Melanotan I: Reference Overview and Reconstitution Notes

Melanotan I (afamelanotide) is a synthetic melanocortin-1 receptor (MC1R) agonist peptide grouped with skin, pigment, and photoprotection research compounds. It is studied in connection with phototoxicity related to erythropoietic protoporphyria,... Read more...
A lab mini-fridge containing a Melanotan II vial next to a syringe and unlabeled vial on a bench.
Melanotan II: Reference Overview and Reconstitution Notes

Melanotan II is a synthetic cyclic peptide analog of alpha-melanocyte-stimulating hormone, grouped with skin and cosmetic research compounds, and it is research-only and not FDA-approved. Read more...
Diagram of Mazdutide reconstitution, showing diluent liquid directed by an arrow into the powder vial next to a clock.
Mazdutide: Reference Overview and Reconstitution Notes

Mazdutide is a synthetic oxyntomodulin-based dual GLP-1/glucagon receptor agonist peptide grouped under metabolic and weight regulation, approved in China for obesity but not FDA-approved and treated as investigational elsewhere. Read more...
A labeled Matrixyl vial, an unlabeled vial of liquid, a syringe, and a small clock on a lab bench.
Matrixyl: Reference Overview and Reconstitution Notes

Matrixyl is a trade name for palmitoyl signal peptides (matrikines) used as topical cosmetic actives, studied in the skin and anti-aging category, and classified as a cosmetic ingredient rather than... Read more...
An LL-37 vial, a vial of liquid, a syringe, a clock, and a notebook on a lab bench in ink-and-wash style.
LL-37: Reference Overview and Reconstitution Notes

LL-37 is a human cathelicidin-family antimicrobial peptide grouped under immune and host-defense research, and it is a research-only compound not approved by any regulator for exogenous human use. Read more...
Ink-and-wash drawing of a Livagen powder vial next to a diluent vial and syringe, showing the reconstitution step.
Livagen: Reference Overview and Reconstitution Notes

Livagen is a synthetic short-peptide (Khavinson-class) bioregulator, the tetrapeptide Lys-Glu-Asp-Ala, grouped under anti-aging and liver-focused tissue bioregulators and sold as a research-only compound that is not FDA-approved. Read more...
Ink-and-wash drawing of a Liraglutide vial in a wire rack next to a syringe and an ice pack on a lab bench.
Liraglutide: Reference Overview and Reconstitution Notes

Liraglutide is an acylated glucagon-like peptide-1 (GLP-1) receptor agonist in the metabolic and weight-regulation category, and it has received regulatory clearance for specific indications. Read more...
An ink-and-wash illustration of a KPV vial, syringe, unlabeled water vial, ice pack, and thermometer on a lab bench.
KPV: Reference Overview and Reconstitution Notes

KPV is a synthetic melanocortin-derived tripeptide studied mainly in inflammation and immune research. It is a research-only compound not approved by any regulator. Read more...
A labeled Kisspeptin vial, an unlabeled liquid vial, a syringe, a clock, and a thermometer on a lab bench.
Kisspeptin: Reference Overview and Reconstitution Notes

Kisspeptin is a KISS1-derived neuropeptide family in the reproductive and neuroendocrine research category, and it is research-only and not approved by any regulator. Read more...
An ink-and-wash illustration of an IGF-DES vial in a rack next to an unlabeled vial, syringe, and ice pack.
IGF-DES: Reference Overview and Reconstitution Notes

IGF-DES is a truncated analog of insulin-like growth factor 1 (IGF-1) in the peptide hormones and growth factors family, studied only in preclinical growth-factor and cell-proliferation research, and it is... Read more...
A vial labeled Humanin on a notebook next to a thermometer, with an open lab fridge and ice pack in the background.
Humanin: Reference Overview and Reconstitution Notes

Humanin is a mitochondrial-derived peptide studied in longevity, metabolic, and neuroprotection research contexts, and it is not FDA-approved for any indication. Read more...
An HMG vial, a plain unlabeled vial of liquid, and a syringe on a sunlit lab bench.
HMG (Menotropins): Reference Overview and Reconstitution Notes

HMG (menotropins) is a urine-derived gonadotropin preparation combining FSH and LH activity, grouped in the reproductive and fertility research category, and used as a prescription product for specific ovulation-related indications;... Read more...
A labeled vial of Hexarelin powder, an unlabeled liquid vial, a syringe, and a notebook on a lab bench near a fridge.
Hexarelin: Reference Overview and Reconstitution Notes

Hexarelin is a synthetic hexapeptide of the growth hormone secretagogue class (a ghrelin-receptor agonist) that is not FDA-approved for any indication and is prohibited in sport under the WADA Prohibited... Read more...
A capped Gansulin pen, a fine insulin syringe, a magnifying glass, and an unlabeled vial on a lab bench.
Refilling a GLP-1 Pen: What Reddit Gets Right

Refilling GLP-1 pens: we fact-check Reddit's top threads on 3 mL cartridges, cover reconstitution math, and share lab handling notes for research use. Read more...
A GHRP-2 vial, an unlabeled vial of liquid, and an insulin syringe on a lab bench beside a clock.
GHRP-2: Reference Overview and Reconstitution Notes

GHRP-2 (pralmorelin) is a synthetic hexapeptide growth hormone secretagogue studied in the context of growth hormone release, and it is research-only and not FDA-approved in the United States. Read more...
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