Notes:
Although the INR is not perfect,
it overcomes the different sensitivities inherent to different
thromboplastins.
This heterogeneity arises because
thromboplastin is made from biological tissue, esp. rabbit
brains.
If I had to guess, I’d say that
the type A rabbits, probably accelerate the coagulation cascade,
and the type B rabbits probably take their time—maybe taking
in a Bugs Bunny movie or something, before clotting.
How people practice at labs that
report only the INR?
the PTR? both?
Relying on the PT Ratio is sort
of like preparing your handouts with a mimeograph machine—dated
and imprecise.
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Stroke Education
