3 yo sickle cell pt has sudden onset difficulty walking. UNable to get out of bed/walk across room when woke up. RIght hand feels clumsy. had 2 hospitalizations for severe UE & back pain. Weakness & Hypotonia of right arm&leg. BP 90/50. Whch screening test would have ID increased risk for acute dx?
a) Serum lactate
b) Urinalysis
c) Peripheral blood smear
d) Serum creatinine kinase