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B.Pharm Lab. Instruction Manuals

Pharmacology I

APHE Anatomy, Physiology, and Health Education

Pharmaceutical Analysis

Pharmacy study material

Bones and Skeleton System

Bone disease (Gout) (Rheumatoid arthritis) (Osteoarthritis) (Osteoporosis)

Cancer and music therapy

Memory of water

1.2.5 Anatomy Physiology and Health Education I

clotting time

Lab 1 Determination of clotting time with the help of Wrighting's method (cont'd...)

Intrinsic pathway (contact with glass, tin etc.)

Clotting time is the time taken to coagulate the blood after rupture of blood vessels. Normally it is 3-8 minutes for a normal human's blood depending upon platelets count (200000 to 350000 /cubic mm) and other clotting factors inside the plasma.

Clinical significance

When a blood vessel is damaged, clotting is required to stop the loss of blood (haemostasis) and healing of the vessel, in which platelets play a vital part. Now it is clear that every factor is equally important for the clotting of blood and the process is impossible in absence of a single factor as the activation of one factor is done by another factor.

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