CLINICAL ENCOUNTERS
ANTICOAGULATION
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Question
[CLICK ON ANY CHOICE TO KNOW THE RIGHT ANSWER]
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1.5 +-0.25mg/ml of blood
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1.3+-0.25mg/ml of blood
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Either A or B
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None of the above
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Detailed explanation-1: -Therefore, dipotassium EDTA is recommended as the anticoagulant of choice in specimen collection for blood cell counting and sizing. The amount of dipotassium EDTA used is 1.5-2.2 mg (3.7-5.4 mumol) per milliliter of blood.
Detailed explanation-2: -The optimal concentration is 1.5 mg per ml of blood. EDTA prevents platelet aggregation and is therefore the preferred anticoagulant for platelet counts.
Detailed explanation-3: -The EDTA BD Vactutainer® brand sterile hematology tubes contain 1.8 mg EDTA per mL blood. Thus, we have a ratio of EDTA to iron 1.8/0.42 simplified to 4.3/1.
Detailed explanation-4: -The Titration The burettte is filled with an EDTA solution of known concentration. Concentrations of 0.010 mol L-1 are commonly used.