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20 Cards in this Set
- Front
- Back
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What are the advantages of evacuated blood collection |
Multiple sample collection Eliminate transfer of specimen Minimize risk of biohazard exposure |
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Amount of blood collected in evacuated tubes |
1.8 to 15ml |
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Preferred with collecting blood from patient small or fragile veins |
Syringe method |
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Advantage of syringe? |
Control suction pressure |
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Example of edta |
Versene/sequestrene |
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Usual concentration of edta |
1-2mg/ml of blood |
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Tube for most hematologic examination |
Edta |
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Why EDTA became the anticoagulant if choice? |
Because they produce less shrinkage of RBC and less increase cell volume on standing |
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Purpose of edta |
Chelated calcium,inactivate coag factor |
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What happen if there is excessive EDTA? |
HMEP,crenated RBC,break wbc and platelets |
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Dry additive |
K2 EDTA,na2EDTA |
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Liquid additive |
K3 edta |
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Most commonly used for coagulation studies |
Sodium citrate |
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Concentration of coagulation studies |
Sodium citrate |
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Enumerate the purpose of sodium citrate |
Bind calcium and form soluble complex Help the platelet retain functional capabilities Increase stability of coagulation factors v and vll Cannot be used to study cell morphology as it causes changes in the cell |
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What anticoagulant interact with antithrombin lll |
Heparin |
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True or false heparin suitable for blood smears |
True |
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Why does heparin not suitable for blood smear |
Gives blue background on Romanowsky stain Cause wbc to clump together |
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Lavender use |
Plasma or whole blood,EDTA(na2,k2,k3) |
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Order of draw for collecting of capillary blood |
Blood gases,lavender stopper other additive minicontainer,red stopper(serum) |
