Page 919 - Textbook of Pathology, 6th Edition

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  TABLE A-5: Normal Haematologic Values. (Contd...)
Reference Value
Component Fluid Conventional SI Units
Clot retraction timeClotted blood
qualitative Visible in 60 min (complete in <24-hr)
quantitative 48-64% (55%)
Clotting time (CT) Whole blood
Lee and White method 4-9 min at 37°C
Euglobin lysis time 72 hr
Fibrinogen Plasma 200-400 mg/dl 2-4 g/L
Fibrin split (or degradation) Plasma <10 μg/ml <10 mg/L
products (FSP or FDP)
Partial thromboplastin time
with kaolin (PTTK) or activated
partial thromboplastin time
(APTT) Plasma 30-40 sec
Platelet count Blood 150,000-400,000/μl
Prothrombin time (PT) Plasma 10-14 sec
(Quick’s one-stage method)
Thrombin time (TT) Plasma <20 sec (control ± 2 sec)

❑ APPENDIX

Normal Values