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Overview
ข้อมูลทั่วไป Specimen
ข้อมูลสิ่งส่งตรวจ Performance
ข้อมูลการทดสอบ Clinical & Interpretation
ข้อมูลทางคลินิก
 
Test Code (รหัสการทดสอบ):
090-10-0200-01
Order Name (ชื่อการทดสอบ):
Clotting Time
 
Specimen / Container (สิ่งส่งตรวจ/ภาชนะ):
Blood/ Glass test tube
 
Turnaround Time (ระยะเวลารอผล):
Collected specimen to reported within 45 mins.
 
Useful For (ประโยชน์การทดสอบ):
Venomous snakebites contribute to morbidity and mortality throughout the world, most commonly in resource-poor areas, with about 2.5 million humans sustaining snakebites annually. Coagulopathy is a significant cause of both morbidity and mortality in these patients. In the absence of more sophisticated hematological studies or obvious physical findings, many clinicians must rely on whole-blood clotting times to assess whether their patients are coagulopathic.
 
Methodology (วิธีการทดสอบ):
20 minute whole blood clotting test (20WBCT)
 
AliasesName (ชื่อเรียกอื่นๆ) :
20WBCT
 
 
 
Test Code (รหัสการทดสอบ):
090-10-0200-01
Order Name (ชื่อการทดสอบ):
Clotting Time
 
Collection Specimen Or Container (สิ่งส่งตรวจ/ภาชนะ):
Blood/ Glass test tube
 
Specimen Testing Type (สิ่งส่งตรวจที่ใช้ในการทดสอบ):
Whole blood/ Bedside testing
 
 
 
Test Code (รหัสการทดสอบ):
090-10-0200-01
Order Name (ชื่อการทดสอบ):
Clotting Time
 
Method detail (วิธีการทดสอบ):
20 minute whole blood clotting test (20WBCT)
 
Schedule (ตารางการทดสอบ):
Tested Daily (24 hours)
 
Turnaround Time (ระยะเวลารอผล):
Collected specimen to reported within 45 mins.
 
Performing Location (หน่วยงานที่ทำการทดสอบ):
Hematology, Laboratory Department Tel. 17254
 
 
 
Test Code (รหัสการทดสอบ):
090-10-0200-01
Order Name (ชื่อการทดสอบ):
Clotting Time
 
 
Clinical Information (ข้อมูลทางคลินิก):
The 20-minute whole blood clotting test (WBCT20) is used as a bedside diagnostic test for coagulopathic snake envenoming. We aimed to assess the performance of the WBCT20 in diagnosis of venom induced consumption coagulopathy (VICC) in Russell's viper envenoming. 

In order for blood to clot, the enzyme thrombin must be generated from the plasma precursor prothrombin. Thrombin then converts soluble fibrinogen into insoluble fibrin. Generation of thrombin involves the sequential activation of a number of other plasma clotting factor, this process is also being assisted by Ca++ and by factors released by platelets and damaged tissues . The time taken for blood to clot mainly reflects the time required for the generation of thrombin in this manner. If the plasma concentration of prothrombin or of some of the other factors is low (or if the factor is absent, or functionally inactive), clotting time will be prolonged. The expected range for clotting time is less than 20 mins.
 
Reference Value (ค่าอ้างอิง):
<20 mins
 
Clinical Reference (เอกสารอ้างอิง):
  1. WHO (Supplement to the Southeast Asian Journal of Tropical Medicine and Public Health Volume 30 Supplement 1, 1999)
  2. https://www.medicine.mcgill.ca/physio/vlab/bloodlab/hemostasis_n.htm