First line |
---|
Pulse oximetry |
Glucose |
Packed cell volume |
Serum calcium (ionised if possible), sodium, magnesium |
Arterial pH |
Lumbar puncture, blood cultures |
Cranial ultrasound scan |
EEG |
Second line |
MRI or CT |
Maternal and neonatal samples (urine/hair/meconium) for drugs of abuse |
Specimens for virology and congenital infection |
Serum ammonia, amino acids |
Urinary amino acids and organic acids |
Consider therapeutic trial or pyridoxine |