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  • Title: Establishment of Normal Reference Intervals for Coagulation Test Indicators in Children.
    Author: Li Z, Lou J, Chen L.
    Journal: Clin Lab; 2024 Feb 01; 70(2):. PubMed ID: 38345972.
    Abstract:
    BACKGROUND: The objective of this study is to determine the standard reference intervals for coagulation function and coagulation factors in children across various age groups. METHODS: A statistical analysis was conducted on prothrombin time (PT), activated partial thromboplastin time (APTT), fibrinogen (Fib), thrombin time (TT), and coagulation factors (II, V, VII, X, VIII, IX, XI, and XII) in 389 healthy children who underwent health checkups and presurgical examinations at the Children's Hospital of Zhejiang University School of Medicine. The children were categorized into four age groups. RESULTS: The established normal reference ranges are as follows: PT (seconds): 10.00 - 12.26 for 1 month - 3 years, 10.24 - 12.66 for 3 - 18 years; APTT (seconds) : 24.82 - 35.65 for 1 month - 1 year, 25.20 - 32.30 for 1 - 18 years; Fib (g/L): 1.21 - 2.44 for 1 month - 1 year, 1.48 - 2.70 for 1 - 3 years, 1.69 - 3.60 for 3 - 18 years; TT (seconds): 18.48 - 23.06 for 1 month - 1 year, 17.80 - 21.26 for 1 - 18 years; coagulation factor II (%): 68.77 - 105.07 for 1 month - 1 year, 78.20 - 119.40 for 1 - 18 years; V (%): 74.24 - 140.96 for 1 month - 3 years, 70.64 - 132.01 for 3 - 18 years; VII (%): 56.34 - 113.00 for 1 month - 18 years; X (%): 49.17 - 105.57 for 1 month - 1 year, 64.34 - 115.24 for 1 - 18 years; VIII (%): 43.53 - 130.07 for 1 month - 1 year, 45.92 - 144.90 for 1 - 18 years; IX (%): 28.55 - 69.17 for 1 month - 1 year, 46.29 - 97.48 for 1 - 18 years; XI (%): 44.64 - 139.00 for 1 month - 1 year, 57.50 - 139.98 for 1 - 18 years; XII (%): 30.16 - 94.48 for 1 month - 1 year, 36.88 - 115.50 for 1 - 18 years. CONCLUSIONS: This study successfully established standard reference intervals for coagulation function and coagulation factors in children of various age groups in Hangzhou, China.
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