Study Comparing Modified Lee White Clotting Time Against Twenty Minute Whole Blood Clotting Test in Snakebite Victims

"1ml of blood drawn from snake bite victims in clean glass test tubes of 1 cm diameter Kept undisturbed for a period of 20 minutes (measured by a stop watch). At the end of 20 minutes the tube is tilted to see if the blood has clotted or not.~If a well formed clot is not formed, the test is recorded as 'abnormal'.~If the clot seems well formed, it is further observed for a period of 30 minutes to look for dissolution of the formed clot and would be termed clot lysis. Clot lysis indicates an unstable clot."

"The blood collected in three additional test tubes would be utilised for MLW.~The three test tubes would be kept on a rack at ambient temperature.~The blood sample would be drawn in a 5cc syringe and 1 ml would be added in the three test tubes consecutively.~The test tube would be left undisturbed for 5 minutes, after that the first tube would be tilted approximately to check for clot formation every 30 seconds while the other tubes are left undisturbed.~After the blood in the first tube has clotted, the time would be noted and the second tube would be tilted every 30 seconds and examined.~Following its clotting, the third tube would be examined. The time at which the third tube is recorded as the CT value.~Once clotted, then the sample in the all three test tube would be assessed at 20 minute and 30 min to look for breakup or lysis of the clot."