Lab Platelet Count chap 14 Flashcards
Referred as thrombocytes
Platelets
Life span of platelets?
8-11 days
How many plates in the circulation and in spleel?
2/3 circulation 1/3 spleen
saan galing ng plts??
From the granules of magakaryocytes
Is the number of plts in 1 L or 1 microliter of whole blood?
Plt count
Nv of plts?
150-400 x 109
Thrombocytosis is found in
Polycythemia vera
Idiopathic thrombocytopenia
CML
After splenectomy
Thrombocytopenia is found?
Thrombocytopenic purpura Aplastic anemia Acute lukemia Gaucher's disease Pernicious anemia Following chemotherapy
Preferred anticoagulant?
EDTA
What do u call when platelets adhere to neutrophils?
Platelets satellitism
Remedy of plt satellitism?
Repeat plt count using sodium citrate
What r the direct plt count estimation?
Reese-ecker
Guy-leakes
Brencher-Cronkite
Unopette
What r the indirect plt count?
Dameshek
Fonio’s
Olef’s
Purpose of sodium citrate in rees-ecker?
It prevents clumping
Stain used in rees ecker?
Brilliant cresyl blue
Preservative in Rees-ecker and Guy-leaks?
40% Formalin
What prevents clumping in Guy-leakes?
Sodium oxalate
Reference method for direct plt count
Brencher-Cronkite
Dilition factor for direct plt count
1:200
Diluent in unopette?
Ammonium oxalate
NV of adult in unopette?
140-440x109/L
Dilution in unopipette?
1:100
How many mis needed to platelets settle?
15 mins
Conversation SI TO conventional
Divide to conversion factor
Conversion of conventional to SI
Times
Diluent in rees-ecker
Dameshek
Also known as wet method?
Dameshek
Also known as dry method
Fonio’s
