Hematocrit Facts - 1
If clay leaks at bottom of microhematocrit tube:
Decreased
Hct if cells lost
If increased
amount of anticoagulant used:
Increased
Hct if only plasma lost
Decreased
Hct due to cells shrinking
Effects of
“trapped plasma” :
Spun
Hct 1 – 3% higher than calculated Hct
Physiological
changes and the effect on Hct :
Dehydration:
Increased
Hct
Rapid
blood loss:
Immediate
- none
Later
– decreased