Díaz Lab Testing Store › IGF-1 | IGF-1 | $67.00 Insulin-like Growth Factor — measures growth hormone activity, muscle health, and metabolic function. Add To Cart Added! Insulin-like Growth Factor — measures growth hormone activity, muscle health, and metabolic function. Add-on: Integrative-Functional Lab Interpretation Report with Recommendations by Adalys Díaz $77.00 Add Added!