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Table 1 Laboratory data a

From: Cephalhematoma and petechial rashes associated with acute parvovirus B19 infection: a case report

Variable Reference rangeb Days of hospitalization After discharge
   Day 1 Day 2 Day 3 Day 5 Day 25
White cell count (/mm3) 3500–9200 2900 2400 2600 3400 4900
Differential count (%)       
Band    7 3 1 1
Segment    54 32 37 37.5
Lymphocytesc    28 54 56 54.5
Monocyte    11 8 5 2
Hemoglobin (g/dl) 13.8–16.6 13.1 12.6 13.0 12.2 14.2
Hematocrit (%) 40.2–49.4 38.2 36.0 34.9 35.1 41.4
Reticulocyte (%) 0.8–2.0   0.2 0.1 0.2 1.1
Platelet count (/mm3) 150,000–365,000 141,000 111,000 106,000 106,000 151,000
Erythrocyte sedimentation rate (mm/h) 0–7   14    
C-reactive protein (mg/dl) <0.3 3.26 1.18 0.52 0.12 0.02
Lactate dehydrogenase (U/L) 125–237 214 210 185 202 259
Aspartate aminotransferase (U/L) 9–38 17 18 18 31 18
Alanine aminotransferase (U/L) 4–36 3 3 3 9 3
Total bilirubin (mg/dl) 0.3–1.3 0.8 0.4 0.3 0.4 0.5
Immunoglobulin G (mg/dl)     1130   
Antinuclear antibody (Index) <40   <40    
Prothrombin time (s)   14.6 11.6 13.1 12.2 11.1
International normalized ratio   1.25 0.99 1.11 1.04 0.97
Activated partial thromboplastin time (s) 25.5–36.1 30.2 28.8 28.6 28.2 30.5
Protein induced by vitamin K absence-II (mAU/ml) <40   32    
Fibrinogen (mg/dl) 186–355 306 309 266 242 239
D-dimmer (μg/dl) <2.5   <0.5    
Antithrombin (%) 83–128   101    
Thrombin–antithrombin complex (ng/ml) 0–2.9   1.6    
Protein C (%) 75–154   69    
Protein S (%) 74–132   71.2    
Platelet aggregation activity     Normal   
Bleeding time <5 min   2 min and 30 s    
Parvovirus B19 IgM (Index) <0.8    10.06   
EBV-VCA IgM (Index)4 <10   10    
EBV-VCA IgG (Index)4 <10   160    
EBNA <10   40    
  1. aBecause this patient was admitted during weekend, the available tests were reduced on day 1 (e.g., differential count on smear).
  2. bReference range at our institution, not adjusted for age. Blank column indicates that reference range was not available.
  3. cAtypical lymphocytes were not observed.
  4. 4measured by fluorescent antibody technique.
  5. EB, Epstein–Barr virus; EBNA, Epstein–Barr nuclear antigen; VCA, viral capsid antigen.