Glossary
Key terms and definitions used in peptide research, lab testing, and quality assurance.
A
Amino Acid
biologyOrganic molecules that serve as building blocks for peptides and proteins. There are 20 standard amino acids used in biological protein synthesis.
B
Bacteriostatic Water
equipmentSterile water containing 0.9% benzyl alcohol as a preservative. Used for reconstituting lyophilized peptides and allows multiple withdrawals from the same vial.
Bioavailability
biologyThe proportion of a substance that enters systemic circulation and is available to produce an active effect. Injection routes typically offer higher bioavailability than oral administration.
BPC-157
biologyBody Protection Compound-157, a pentadecapeptide (15 amino acids) derived from human gastric juice. Researched for tissue repair and wound healing properties.
C
Certificate of Analysis (COA)
regulationA document from a qualified testing laboratory that confirms a product meets its specification. Includes identity, purity, potency, and contaminant testing results.
cGMP
regulationCurrent Good Manufacturing Practice. FDA regulations ensuring pharmaceutical products are consistently produced and controlled according to quality standards.
Cycle
procedureA defined period during which a research compound is administered, typically followed by a rest period. Cycle lengths vary by compound and research protocol.
D
Dalton (Da)
chemistryA unit of molecular mass roughly equal to the mass of a hydrogen atom. Peptides typically range from 500 to 5,000 daltons.
Desiccant
equipmentA hygroscopic substance used to maintain a dry environment. Often included in peptide packaging to protect lyophilized powders from moisture.
E
Endotoxin
biologyLipopolysaccharides found in the outer membrane of gram-negative bacteria. Testing for endotoxins is a critical quality control step for injectable compounds.
Epithalon
biologyA synthetic tetrapeptide (Ala-Glu-Asp-Gly) studied for its effects on telomerase activation and potential anti-aging properties.
G
GLP-1
biologyGlucagon-Like Peptide-1, an incretin hormone involved in glucose metabolism and appetite regulation. GLP-1 receptor agonists are widely researched for metabolic applications.
GMP
regulationGood Manufacturing Practice. Quality assurance standards ensuring products are consistently produced and controlled to appropriate quality standards.
H
Half-Life
biologyThe time required for a substance's concentration to decrease by half. Determines dosing frequency in research protocols.
Heavy Metals Testing
regulationAnalysis for toxic metals such as lead, mercury, arsenic, and cadmium. Essential quality control for research compounds to ensure they are free from contamination.
HPLC
chemistryHigh-Performance Liquid Chromatography. An analytical technique used to separate, identify, and quantify components in a mixture. The gold standard for determining peptide purity.
I
In Vitro
procedureLatin for 'in glass.' Refers to studies performed outside a living organism, such as in test tubes or cell cultures.
In Vivo
procedureLatin for 'in the living.' Refers to studies performed within a living organism.
Ipamorelin
biologyA pentapeptide growth hormone secretagogue that selectively stimulates GH release without significantly affecting cortisol or prolactin levels.
L
Lyophilized
procedureFreeze-dried. A preservation process that removes water from a frozen product under vacuum. Lyophilized peptides are more stable and have longer shelf lives than liquid formulations.
M
Mass Spectrometry (MS)
chemistryAn analytical technique that measures the mass-to-charge ratio of ions. Used alongside HPLC to confirm peptide identity and detect impurities.
mcg (Microgram)
chemistryOne millionth of a gram (0.001 mg). Many peptide dosages are measured in micrograms.
Molecular Weight
chemistryThe sum of the atomic weights of all atoms in a molecule, measured in daltons. Determines a peptide's classification and influences its biological activity.
MOTS-c
biologyMitochondrial Open reading frame of the Twelve S rRNA type-c. A mitochondrial-derived peptide researched for metabolic regulation and exercise mimetic effects.
N
NAD+
biologyNicotinamide Adenine Dinucleotide. A coenzyme essential for cellular energy production, DNA repair, and sirtuin activation. Levels decline with age.
P
Peptide
biologyA short chain of amino acids (typically 2-50) linked by peptide bonds. Smaller than proteins, peptides serve as signaling molecules in biological systems.
Peptide Bond
chemistryThe chemical bond formed between the carboxyl group of one amino acid and the amino group of another during protein synthesis.
Purity
chemistryThe percentage of the desired compound in a sample, as determined by HPLC analysis. Research-grade peptides typically have 98%+ purity.
R
Reconstitution
procedureThe process of adding a diluent (usually bacteriostatic water) to a lyophilized powder to create a solution. Proper reconstitution technique is critical for compound integrity.
S
Secretagogue
biologyA substance that promotes the secretion of another substance. Growth hormone secretagogues stimulate the pituitary gland to release growth hormone.
Sterility
regulationThe absence of viable microorganisms. Injectable research compounds must pass sterility testing to ensure freedom from bacterial and fungal contamination.
Subcutaneous (SubQ)
procedureBeneath the skin. Subcutaneous injection delivers a compound into the fatty tissue layer between the skin and muscle.
T
TB-500
biologyA synthetic fragment of Thymosin Beta-4, a naturally occurring peptide involved in tissue repair, cell migration, and anti-inflammatory responses.
Telomerase
biologyAn enzyme that adds DNA sequence repeats to the ends of chromosomes (telomeres). Researched for its potential role in cellular aging and longevity.
Third-Party Testing
regulationQuality analysis performed by an independent laboratory not affiliated with the manufacturer. Provides unbiased verification of product identity, purity, and safety.
U
USP
regulationUnited States Pharmacopeia. A nonprofit organization that sets quality standards for medicines, dietary supplements, and food ingredients.
