What is Selank related to?
Selank is commonly described as a synthetic tuftsin-derived peptide. That relationship concerns structure and research history; it does not make Selank identical to tuftsin.
Selank Reconstitution Calculator: mg, mL & Units
Classification: Synthetic tuftsin-derived heptapeptide
Overview
Selank is a synthetic peptide commonly described as Thr-Lys-Pro-Arg-Pro-Gly-Pro. It is discussed as an analogue of tuftsin, a naturally occurring immunomodulatory peptide fragment. “Tuftsin-derived” describes a structural and research relationship; it does not mean that Selank is tuftsin, nor does it establish a clinical effect.
The research record includes animal and biological studies. One PubMed record examines Selank as a tuftsin analogue in a rat memory model, while other records examine inflammatory gene expression and short peptides in the tuftsin family. These studies are valuable for forming research questions, but they do not establish anxiety treatment, cognitive improvement, immune benefit, or another outcome for a person.
The FDA Precision Medicine Global Substance Registration System record identifies Selank as a peptide and provides a public nomenclature record. That kind of record should not be mistaken for an FDA approval, marketing authorization, product label, or finding that a container is authentic. Regulatory status is jurisdiction-specific, so this page uses the narrower research-stage description supported by the cited material.
PepLedger’s calculator is independent of those biological questions. The visitor enters a mass, a liquid volume associated with that value, an amount to calculate, and a display scale. The result is arithmetic using those entries. PepLedger does not select an amount, identify a source, recommend a route, or turn a research publication into a use plan.
Concentration is the bridge between mass and volume. The calculation uses the visitor’s entered mass and liquid volume; if the volume changes, the concentration changes even when the mass entry does not. Syringe units are volume markings. U-100 and U-40 identify different scale relationships, not Selank amounts. Without a verified concentration, a scale marking cannot be interpreted as mass.
A study may use a particular sequence, formulation, species, model, or endpoint that does not match a visitor’s material. A positive laboratory observation is not a guarantee of clinical efficacy, and a nomenclature record is not quality control.
Research context
Peer-reviewed work has examined Selank and related tuftsin-family peptides in animal models and molecular investigations. The models, endpoints, and experimental conditions vary. PepLedger reports those categories without claiming anxiety relief, cognitive improvement, memory enhancement, or immune effects.
Evidence and regulatory status
The PubMed sources support the tuftsin relationship and the existence of experimental work. The FDA Precision record supports a public peptide identity record. None of them is an FDA approval decision for Selank.
Unit notes
Mass entries may use mg or mcg. The universal relationship is 1 mg = 1,000 mcg.
U-100 means 100 units per mL and U-40 means 40 units per mL. Both are display-scale definitions, not Selank directions.
A syringe unit is a volume-scale marking. Concentration must come from the visitor’s own consistent entries before mass can be represented.
Limitations
- A numerical result cannot authenticate a research material or establish its quality, sterility, stability, identity, or suitability. It cannot translate an animal finding into human guidance.
Frequently asked questions
What does this calculator calculate?
It calculates a concentration, a calculated mL value, and a syringe-scale position from visitor-entered mass, liquid volume, amount, and scale values.
Does PepLedger choose an amount for Selank?
No. PepLedger does not determine or recommend an amount. It performs arithmetic using values entered by the visitor.
Is the FDA Selank substance record an approval?
No. The FDA Precision record is a public substance identity and classification record, not an approval decision or product label.
Why cannot a syringe unit be treated as Selank mass?
A syringe unit describes a volume scale. The concentration derived from consistent visitor-entered values is needed to relate that volume to mass.
Do the cited animal studies establish anxiety or cognitive benefits?
No. They are research records in defined models. They do not establish a personal treatment effect or authorize a calculator recommendation.
Sources and official references
- Selank, Peptide Analogue of Tuftsin, Protects Against Ethanol-Induced Memory Impairment in Rats — PubMed / Cellular and Molecular Neurobiology (2019)
- Selank and short peptides of the tuftsin family in the regulation of adaptive processes — PubMed (2003)
- The temporary dynamics of inflammation-related genes expression under tuftsin analog Selank action — PubMed (2013)
- Selank — PubChem / National Library of Medicine
- Selank — FDA Global Substance Registration System / PrecisionFDA
Calculation methodology
PepLedger calculates concentration, liquid volume and syringe-scale position exclusively from the values you enter. It does not choose or recommend an amount.
View our calculation methodology and editorial standards
Last updated: September 13, 2026