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Library · Immune · Diagnostic testing of adrenal gland function

Cosyntropin (Tetracosactide)

Synacthen, Cortrosyn, Tetracosactrin, ACTH(1-24)

Synthetic ACTH analog (first 24 amino acids) from the 1960s, used as the gold-standard diagnostic test for adrenal function under brand names Synacthen and Cortrosyn. Some research also explores therapeutic use in certain autoimmune conditions.

Research score 85/100. Reference only, not a dose.

  • Hormone Regulation
  • Anti-inflammatory
  • Immune Boosting
  • Inflammation Resolution
US status
Prescription Only
Approval
FDA + EMA Approved
Evidence
Extensive Human Studies
Research score
85 / 100
Indication
Diagnostic Agent
Origin
Switzerland
Source category
Immune System
Status group
Approved / prescription

Mechanism

Binds melanocortin-2 receptors on adrenal cortex cells, raising cAMP and PKA activity that mobilizes cholesterol via StAR protein regulation, driving cortisol and other adrenal steroid synthesis.

Safety file

Good.

  • Allergic reactions
  • Temporary dizziness
  • Facial flushing
  • Local injection site reactions
  • Nausea