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Strength athlete representing myostatin blocker genetics research — PlexusDx Precision Peptide Genetic Test

Myostatin Blockers and Genetics: What the Research Shows

Myostatin — encoded by the MSTN gene — is one of the most actively researched muscle growth regulators in exercise science. Your MSTN genotype determines how tightly this brake is set before any intervention. The Precision Peptide Genetic Test analyzes MSTN variants as part of 15 Muscle Growth insights across 14 pathways, 49 peptides, and 150+ genetic insights.

Gym-goer representing the genetics behind why muscle building response varies — PlexusDx Precision Peptide Genetic Test

Why Don't I Build Muscle? Your Genetics May Have Answers

Struggling to build muscle despite consistent training? Genetics may be the missing variable. MSTN, ACTN3, IGF1, GHSR, and VDR variants all influence how your body responds to resistance training stimulus — from hypertrophy ceiling to anabolic signal strength to fiber architecture. The Precision Peptide Genetic Test analyzes 15 Muscle Growth insights across 14 pathways, 49 peptides, and 150+ genetic insights.

Muscular athlete representing myostatin MSTN genetics and muscle mass — PlexusDx Precision Peptide Genetic Test

Myostatin (MSTN) and Muscle Mass: What Your Genetics Reveal

Myostatin — encoded by the MSTN gene — is the body’s primary biological brake on muscle mass accumulation. The Precision Peptide Genetic Test analyzes MSTN variants as part of 15 Muscle Growth insights across 14 pathways, 49 peptides, and 150+ genetic insights — revealing how tightly your genetics constrain your hypertrophy ceiling.