IGFBP-1 (Insulin-like Growth Factor-binding Protein 1) LabCorp

This test measures the level of IGFBP-1 in your blood, a protein that binds to insulin-like growth factors and helps regulate their activity. It is often used to help diagnose conditions like Polycystic Ovary Syndrome (PCOS) or assess growth hormone levels. Elevated levels can sometimes indicate insulin resistance.