Table 1.

Initial laboratory results

Test	Result	Test	Result
Blood urea nitrogen (mg/dL)	112	Haptoglobin (mg/dL)	10
Creatinine (mg/dL)	22.2	Hemoglobin (g/dL)	9.3
Sodium (mEq/L)	131	Hematocrit (%)	25.7
Potassium (mEq/L)	3.1	Platelets (10*9/L)	136
Chloride (mEq/L)	89	White blood cells (109/L)	13.5
Carbon dioxide (mEq/L)	20	ADAMTS13 activity (%)	59
Anion gap (mEq/L)	22	aHUS/TMA gene panel	Negative
Lactate dehydrogenase (IU/L)	798