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Peptide Therapy GuideClear peptide education

Understand the source comparison

TB-4 Blood Work Labs: Before vs. After Comparison

ALT (liver enzyme) 10–40 IU/L 15–55 IU/L Mild elevation common; reflects hepatic metabolic activity, not damage Hold protocol if >3× baseline or >120 IU/L AST (liver enzyme) 15–50 IU/L Parallels ALT; disproportionate AST rise suggests muscle breakdown, not liv

No winner is assigned.

This page preserves a source comparison for education. It does not add a rating, recommendation or clinical judgment.

  • ALT (liver enzyme)
  • 10–40 IU/L
  • 15–55 IU/L
  • Mild elevation common; reflects hepatic metabolic activity, not damage
  • Hold protocol if >3× baseline or >120 IU/L
  • AST (liver enzyme)
  • 15–50 IU/L
  • Parallels ALT; disproportionate AST rise suggests muscle breakdown, not liver
  • AST:ALT ratio >2 warrants muscle enzyme check (CPK)
  • TSH (thyroid)
  • 0.4–4.0 mIU/L
  • 0.3–4.5 mIU/L
  • Mild suppression possible in growth/repair protocols; free T3/T4 matter more
  • Investigate if TSH <0.1 or >6.0 with symptoms
  • Creatinine (kidney)
  • 0.7–1.3 mg/dL
  • 0.7–1.4 mg/dL
  • Should remain stable; elevation suggests dehydration or renal strain
  • eGFR drop >15% from baseline requires hydration assessment
  • CRP (inflammation)
  • <3.0 mg/L
  • <2.0 mg/L
  • TB-4 typically reduces baseline inflammation; paradoxical rise is red flag
  • CRP >10 mg/L suggests infection or inflammatory flare unrelated to TB-4
  • Platelet Count
  • 150,000–400,000/μL
  • 140,000–420,000/μL
  • Minor flux normal; significant drop suggests bone marrow suppression or immune response
  • <100,000/μL requires hematology consult before continuing