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Laboratory tests recommended in evaluation for ED
| Hemoglobin A1C |
| Hypothalamic-pituitary-gonadal axis evaluation |
| Testosterone |
| Free testosterone |
| Sex hormone-binding globulin |
| Prolactin |
| Luteinizing hormone |
| Follicle stimulating hormone |
| Lipid profile |
| Total cholesterol |
| HDL cholesterol |
| LDL cholesterol |
| VLDL cholesterol |
| Triglycerides |
| Thyroid function tests (if indicated) |
| Thyroid-stimulating hormone |
| Triiodothyronine (T3) |
| Total thyroxine (T4) |
| Free thyroxine (FT4) |
