The Lab

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

A vial labeled GDF-8 in a rack next to an ice pack, thermometer, and syringe on a lab bench.
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...
A labeled FOXO4-DRI vial, syringe, ice pack, clock, and notebook on a lab bench in an ink-and-wash style.
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 approved by any regulator. Read more...
A labeled Follistatin vial, an unlabeled liquid vial, a syringe, and a notebook on a sunlit lab bench.
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...
An EPO vial in a wire rack on a lab bench next to an open lab fridge with a thermometer.
EPO: Reference Overview and Reconstitution Notes

EPO (erythropoietin) is a glycoprotein hormone and erythropoiesis-stimulating agent, grouped as a hematopoietic growth factor. It is a prescription biologic, not approved by any regulator for the uses described here,... Read more...
An open lab mini-fridge containing an Ecnoglutide vial, with a syringe and unlabeled vial on the bench.
Ecnoglutide: Reference Overview and Reconstitution Notes

Ecnoglutide is an investigational cAMP-biased GLP-1 receptor agonist peptide grouped under metabolic and weight regulation research, and it is not FDA-approved in the United States. Read more...
A labeled vial of Dermorphin in a rack next to an unlabeled liquid vial, a syringe, and a notebook on a lab bench.
Dermorphin: Reference Overview and Reconstitution Notes

Dermorphin is a naturally occurring opioid heptapeptide from amphibian skin, grouped with analgesic and opioid-receptor research peptides, and it is not FDA-approved (research-only). Read more...
Before-and-after views of Crystagen vial showing dry powder and fully dissolved liquid next to a blank clock.
Crystagen: Reference Overview and Reconstitution Notes

Crystagen is a short synthetic peptide composed of a Glu-Asp-Pro tripeptide sequence, belonging to the Khavinson bioregulator family. It is classified as an immune bioregulator and is supplied solely for... Read more...
Lab fridge with a glowing vial next to a shipping box and vials on a bench under a blank clock.
Cold Chain Basics: Keeping Vials Cold in Transit

An educational reference on moving refrigerated vials while keeping them within a stable cool range and avoiding both heat and accidental freezing. Read more...
A Chonluten vial on a notebook next to a syringe and a plain vial of diluent on a lab bench.
Chonluten: Reference Overview and Reconstitution Notes

Chonluten is a synthetic short-peptide (tripeptide) Khavinson-type bioregulator studied in respiratory-tissue research contexts and is not FDA-approved, remaining a research-only material. Read more...
A labeled Cartalax vial, an unlabeled liquid vial, and a syringe on a sunlit lab bench next to a notebook.
Cartalax: Reference Overview and Reconstitution Notes

Cartalax is a synthetic short-chain peptide belonging to the Khavinson bioregulator family, classified among cartilage and connective-tissue peptides. It is intended strictly for research use and is not approved by... Read more...
Ink-and-wash illustration of a Cardiogen vial in a wire rack next to a syringe, unlabeled vial, and ice pack.
Cardiogen: Reference Overview and Reconstitution Notes

Cardiogen is a short synthetic peptide of the Khavinson bioregulator family, grouped as a heart or cardiovascular tissue bioregulator, and it is research-only and not FDA-approved. Read more...
A lab fridge holding a Bronchogen vial next to a syringe and an unlabeled vial on a lab bench.
Bronchogen: Reference Overview and Reconstitution Notes

Bronchogen is a synthetic short-peptide (tetrapeptide) bioregulator of the Khavinson family, grouped with the bronchopulmonary tissue bioregulators, that is not FDA-approved and is handled as a research-only material. Read more...
Reconstituting ARA-290 peptide, showing the transition from lyophilized powder to a clear liquid solution.
ARA-290: Reference Overview and Reconstitution Notes

ARA-290 (cibinetide) is an 11-amino-acid erythropoietin-derived peptide studied in the context of tissue repair and inflammation, and it is not approved by any regulator for any indication. Read more...
An Amycretin vial on a closed notebook next to a thermometer resting on an ice pack on a lab bench.
Amycretin: Reference Overview and Reconstitution Notes

Amycretin is a unimolecular GLP-1 and amylin receptor agonist studied in the context of metabolic and weight regulation, and it is investigational and not FDA-approved. Read more...
An ink-and-wash drawing of an AOD-9604 vial in a rack next to a syringe, thermometer, and notebook on a lab bench.
AOD-9604: Reference Overview and Reconstitution Notes

AOD-9604 is a synthetic fragment of the human growth hormone C-terminus, grouped in metabolic and weight-regulation research, and it is not approved as a drug by any major regulatory authority. Read more...
An Adamax vial on a closed notebook next to a pencil, a syringe, and an ice pack on a lab bench.
Adamax: Reference Overview and Reconstitution Notes

Adamax is a synthetic Semax-derived melanocortin peptide grouped in the cognitive and neuromodulatory research category, and it is a research-only compound that is not approved by any regulator. Read more...
An ACE-031 vial, syringe, ice pack, and notebook on a lab bench near an open lab fridge.
ACE-031: Reference Overview and Reconstitution Notes

ACE-031 (ramatercept) is an investigational activin receptor type IIB (ActRIIB) Fc-fusion protein studied in the context of muscle mass regulation. It remains research-only and is not approved by any regulator. Read more...
An open lab mini-fridge on a bench holding a vial of 5-Amino-1MQ, alongside a thermometer, syringe, and ice pack.
5-Amino-1MQ: Reference Overview and Reconstitution Notes

5-Amino-1MQ is a synthetic small-molecule NNMT inhibitor grouped with metabolic and weight-regulation research compounds. It is intended for research use only and has not been approved by any regulator. Read more...
A balance scale comparing an intact beaded chain in a vial to a broken one, showing functional differences.
Why your GLP-1 vial's breakdown product acts differently

GLP-1's inactive breakdown product is a peptide fragment left behind once the native hormone degrades — inside a GLP-1 vial in storage, in solution after reconstitution, or in the body.... Read more...
A balance scale holding a neat beaded chain and a tangled one at identical heights, showing equal weight.
Why one mass number can't prove your peptide is pure

A sialylated N-glycopeptide is a peptide backbone that still has a sugar chain — a glycan — attached at an asparagine residue, where that glycan also carries a sugar called... Read more...
A Gansulin pen and a glass cartridge under a magnifying glass on a lab bench.
Your v4 peptide pen is metering wrong and here's why

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...
An open mini-fridge holding a P21 vial next to a syringe and notebook on a lab bench.
P21: Reference Overview and Reconstitution Notes

P21 (P021) is a synthetic CNTF-derived neurogenic peptide studied in cognitive and neurological research contexts, and it is a research-only compound that is not FDA-approved. Read more...
A balance scale tipped heavily by a green Gansulin pen on one side, with a single glass cartridge on the light side.
Why Disposable Peptide Pens Waste More Than You Think

A disposable peptide pen is a single-use, click-dial laboratory injector built around a 3 mL glass cartridge, where the dial counts fixed mechanical steps rather than true microliters. Because the... Read more...
Diagram of a U-100 syringe and a 1 mL vial on a lab bench alongside a calculator and notebook.
Peptide Reconstitution Math: Step-by-Step With Worked Examples

The canonical step-by-step reference for peptide reconstitution math: concentration, draw volume, three worked examples, and the common errors to avoid. Read more...
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