| Test(s) | Rationale |
| Basic tests (performed in most children) |
| CBC, CRP, ESR | - Screen for anemia, chronic infection, inflammation, malignancy
|
| Urinalysis, urine culture | - Screen for protein or carbohydrate loss (eg, glucosuria) and indolent kidney disease (eg, renal tubular acidosis, UTI)
|
| Additional tests for initial evaluation if clinically indicated by the history or examination |
- Electrolytes, BUN, creatinine, glucose
- Calcium, phosphorus, magnesium
- Albumin, total protein, liver enzymes
- Amylase, lipase
- Prealbumin
| - Evaluation of kidney, liver, and pancreatic disease
- Assessment of nutritional status
|
Stool studies: - Guaiac, leukocytes
- Routine culture, ova and parasite smears
- Giardia antigen
| - Evaluate gastrointestinal infection
|
| Chest radiograph | - Evaluate cardiopulmonary disease
|
