Table 1

Hospital Laboratory Monitoring of Anticoagulation During Hospitalization

Laboratory Test ValueNormal RangeLaboratory Test Value on Hospital Day
123456
(Surgery)
78910
Hemoglobin concentration, g/dL11.5–15.814.613.514.013.612.6a11.211.8
Activated partial thromboplastin time, sec23.5–36.541.739.131.528.827.727.1
Ecarin chromogenic assay, ng/mL130.91242.31254.68200.4041.08
Prothrombin time, sec11.8–14.517.815.014.0
International Normalized Ratio0.89–1.161.511.211.11
Thrombin time, sec10–21>120117.3
Platelet count, 103/μL140–400231199202189250
Serum creatinine, mg/dL0.5–1.31.150.960.840.970.950.990.840.860.910.81
Creatinine clearanceb33394539393845444247
  • a Laboratory value was not obtained on designated day for review.

  • b Clearance estimated using Cockcroft-Gault calculation.