Anticougulants Flashcards
Na, K, NH4 4 and lithium or di-oxalate cannot be used for
BUN and electrolyte determinations
Oxalate
more soluble than Na or K
Lithium oxalate
Prevents the formation of a white precipitate in uric
acid determination
Oxalate
alters the electrolyte distribution in blood and interferes with precipitation of protein (Folin-Wu); gives too low sugar values and may cause shrinkage of cells
Sodium and potassium oxalate
Na and k oxalate measurement
3 mg/mL of blood
for hematologic purposes
Double oxalate
Consists of 3 parts by weight of
ammonium oxalate to 2 parts
potassium oxalate and causes no
change in red cells due to balance of
conflicting forces
Doubles oxalate
used as blood preservative for blood
glucose determination and at the same time act as a
weak anticoagulant.
Fluoride
It is commonly used with oxalate whenever blood must be preserved for later analysis and blood with
Na Fluoride is preserved for 24 hours at room
temperature
Fluoride
Acts on Ca to form insoluble calcium fluoride
Fluoride
It inhibits the enzyme involved in glycolysis
Fluoride
-Na and K, ACD (Acid Citrate Dextrose - an efficient anticoagulant for blood transfusion since it is non-toxic and the salt is rapidly utilized and excreted
Citrate
acts
as chelating agent which combines
with Ca which is essential for clotting
mechanism
Ethylene Diamine Tetra Acetic Acid
solute to about 10%.
It should be neutralized to pH 7.4
before use by the addition of NaOH
Di sodium salt
same preparation as
disodium salt
Sodium salt
