Table 1. Clinical Laboratory Results.^*.

Variable	Reference Range	Hospital Day 1 (Day 4 after Onset of Symptoms)	Hospital Day 2 (Day 5 after Onset of Symptoms)	Hospital Day 3 (Day 6 after Onset of Symptoms)	Hospital Day 4 (Day 7 after Onset of Symptoms)
C-reactive protein (mg/liter)	<3.0			25.6†
Troponin I (ng/ml)	0–0.4			<0.017
d-dimer (ng/ml)	<400			1710†
Sodium (mmol/liter)	136–145	137		139
Potassium (mmol/liter)	3.5–5.1	4.1		3.8
Chloride (mmol/liter)	98–107	104		110†
Carbon dioxide (mmol/liter)	20–31	22		19‡
Blood urea nitrogen (mg/dl)	9–23	5‡		6‡
Creatinine (mg/dl)	0.7–1.3	0.6‡		0.7
Glucose (mg/dl)	80–140	92		145†
Calcium (mg/dl)	8.7–10.4	8.1‡		8.0‡
Total protein (g/dl)	5.7–8.2	6.9		6.1
Globulin (g/dl)	2.0–3.0	4.3†		3.9†
Aspartate aminotransferase (U/liter)	10–40	21		24
Alanine aminotransferase (U/liter)	10–49	25		23
Anion gap (mmol/liter)	5–16	11		10
Albumin (g/dl)	3.2–4.8	2.6‡		2.2‡
Total bilirubin (mg/dl)	0.3–1.2	0.4		0.6
Alkaline phosphatase (U/liter)	46–116	165†		164†
Lactate dehydrogenase (U/liter)	120–246			242
Lactic acid (mmol/liter)	0.4–2.0			1.9
White-cell count (per mm3)	3800–11,000	5900	5700	10,300	7700
Hemoglobin (g/dl)	13.2–17.0	10.3‡	10.2‡	10.9‡	11.3‡
Hematocrit (%)	39.0–50.0	31.9‡	32.5‡	34.0‡	35.7‡
Platelet count (per mm3)	150,000–400,000	210,000	186,000	171,000	178,000
Absolute neutrophil count (per mm3)	1900–7400	4500	4100	8800†	5200
Absolute lymphocyte count (per mm3)	1100–3900	1000‡	1200	1100	2200
Erythrocyte sedimentation rate (mm/hr)	1–20			32†

^*To convert the values for blood urea nitrogen to millimoles per liter, multiply by 0.357. To convert the values for creatinine to micromoles per liter, multiply by 88.4. To convert the values for calcium to millimoles per liter, multiply by 0.250. To convert the values for bilirubin to micromoles per liter, multiply by 17.1.

^†The value in the patient was above the normal range.

^‡The value in the patient was below the normal range.