Table 1.

Initial Laboratory Results on Presentation

Laboratory Testa	Case 1	Case 2
White blood cells, k/μL	17.5 (normal range for age, 6-17.5)	17.3 (normal range for age, 4.5-13.5)
% neutrophils	19	80
% lymphocytes	72	14
Hemoglobin, g/dL	8.6 (normal range for age, 11.3-12.5)	11.6 (normal range for age, 12-14.4)
Hematocrit, %	28.9	35.2
Platelet count, k/μL (normal range, 150-400)	506	210
Serum sodium, mEq/L	140	142
Serum potassium, mEq/L	5.3	4.1
Serum chloride, mEq/L	99	108
Serum bicarbonate, mEq/L	24	22
Serum urea nitrogen, mg/dL	15	11
Serum creatinine, mg/dL	3.2	0.5
Serum calcium, mg/dL	8.7	7.6, corrected for albumin 9.2
Phosphorus, mg/dL	2.4	5.8
Magnesium, mg/dL	3.2	1.7
Serum glucose, mg/dL	76	80
Total protein, mg/dL	4.6	3.4
Serum albumin, mg/dL	2.9	<2.0
AST/ALT, U/L	23/<10	<20/<10
Total/direct bilirubin, mg/dL	0.1/<0.2	0.4/<0.2
Lipid panel, mg/dL	Not done	Cholesterol, 182; LDL-C, 131
D-dimer, μg/mL (normal range, 0.0-0.5)	Not done	1.96
Fibrinogen, mg/dL (normal range, 187-502)	Not done	902
Prothrombin time, s	Not done	14.3 (11.8-14.8)
Partial thromboplastin time, s	Not done	33.4 (31.8-43.7)
Pro-BNP, pg/mL (normal range, <450)	Not done	5,864
Troponin, ng/mL (normal range, <0.10)	Not done	0.02
Urinalysis	Specific gravity, 1.010; pH > 9; rest negative	Specific gravity, >1.030; pH 6.5; protein > 1,000 mg/dL; moderate blood; rest negative
Urine microscopy (WBC, RBC/high-power field	Not done	6-10 WBC, 4-10 RBC, +hyaline casts
Urinary protein-creatinine ratio, mg/mg	Not done	18.7

Note: Conversion factors for units: creatinine in mg/dL to μmol/L, ×88.4; calcium in mg/dL to mmol/L, ×0.2495; phosphorus in mg/dL to mmol/L, ×0.3229; glucose in mg/dL to mmol/L, ×0.05551.

Abbreviations: AST/ALT, aspartate/alanine aminotransferase; LDL-C, low-density lipoprotein cholesterol; BNP, brain natriuretic peptide; RBC, red blood cell; WBC, white blood cell.

^aWhen applicable, normal range shown in parentheses.