Chart 1. Initial investigation of children and adolescents with AH13.
| Complete blood count |
| Kidney function and electrolytes (including calcium, phosphorus and magnesium) |
| Lipid profile |
| Serum uric acid |
| Type 1 urinalysis and urine culture |
| Fundoscopy |
| Chest X-ray |
| Doppler echocardiography |
| Renal and urinary tract US with Doppler of renal arteries |