The Lab

Preppin Peppers' research library. Reconstitution guides, a growing peptide reference database, and bench-ready calculators, all in one place. For research and educational reference only.

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The Lab

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...
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 is FDA-approved for specific indications. Read more...
KPV: Reference Overview and Reconstitution Notes

KPV is a synthetic melanocortin-derived tripeptide studied mainly in inflammation and immune research, and it is a research-only compound that is not approved by the FDA for human use. Read more...
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 FDA-approved. Read more...
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...
IGF-1 LR3: Reference Overview and Reconstitution Notes

IGF-1 LR3 is a long-acting synthetic analog of insulin-like growth factor 1, a growth factor studied in cellular and tissue research, and it is a research-only compound that is not... Read more...
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...
How Tau and Fyn lock your PSD condensate in place

What it is Tau and Fyn are two proteins that arrest the mobility of scaffold proteins inside postsynaptic density condensates through a cooperative multivalent interaction, forming a 2:1 Fyn:Tau structure... Read more...
How synthesis impurities quietly skew your peptide data

What it is Aβ42 is a 42-amino-acid peptide fragment studied for its role in amyloid aggregation research; it can be produced either by chemical (synthetic) or recombinant methods, which differ... Read more...
How receptor shape controls which signal your peptide triggers

For research and educational reference only. PreppinPeppers sells laboratory hardware and materials (reconstitution pens, cartridges, and bacteriostatic water); it does not sell peptides or any substance for consumption. This is... Read more...
How Dead Volume Wastes Your Expensive Peptide Vials

What Dead Volume Is Dead volume is the liquid that remains trapped inside a reconstitution pen or cartridge after every draw, even when the hardware is handled carefully. For laboratory... Read more...
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 FDA-approved as a prescription product for specific ovulation-related indications. Read more...
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...
HCG: Reference Overview and Reconstitution Notes

HCG (human chorionic gonadotropin) is a glycoprotein gonadotropin hormone in the reproductive and endocrine research category, FDA-approved for specific reproductive and endocrine indications. Read more...
Gonadorelin: Reference Overview and Reconstitution Notes

Gonadorelin is a synthetic decapeptide identical to gonadotropin-releasing hormone (GnRH) in the reproductive/endocrine peptide category; no gonadorelin product is currently FDA-approved and marketed in the United States, so it is... Read more...
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...
GHRP-6: Reference Overview and Reconstitution Notes

GHRP-6 is a synthetic hexapeptide growth-hormone secretagogue studied in preclinical research settings, and it is not FDA-approved and is prohibited in sport under the WADA Prohibited List. Read more...
GHK-Cu + BPC-157: Skin and Connective-Tissue Pairing

Explore GHK-Cu and BPC-157 as a skin and connective-tissue research pairing, including their roles as the two-peptide core of GLOW and KLOW blends. Read more...
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...
GDF-8 (Myostatin): Reference Overview and Reconstitution Notes

GDF-8, also called myostatin, is a TGF-beta superfamily growth factor grouped under metabolic and muscle-regulation research, and it is research-only and not FDA-approved. Read more...
FOXO4-DRI: Reference Overview and Reconstitution Notes

FOXO4-DRI is a synthetic D-retro-inverso peptide studied in the anti-aging and longevity research category, and it is research-only and not FDA-approved. Read more...
Follistatin: Reference Overview and Reconstitution Notes

Follistatin is a secreted glycoprotein of the myostatin and TGF-beta binding family, grouped in muscle and metabolic research, and is a research-only compound that is not FDA-approved. Read more...
EPO: Reference Overview and Reconstitution Notes

EPO (erythropoietin) is a glycoprotein hormone and erythropoiesis-stimulating agent, grouped as a hematopoietic growth factor, and it is an FDA-approved prescription biologic that is prohibited at all times in sport... Read more...
Epithalon + GHK-Cu: A Longevity-and-Skin Pairing

Explore the research pairing of Epithalon and GHK-Cu, combining cellular aging and skin-remodeling studies in one longevity-focused educational overview. Read more...