Paper I — 2022 July (Supplementary) (2019 Scheme) — Q21

Paper I

2022 July (Supplementary) (2019 Scheme) · 100 marks · 180 min

Question

Name two anticoagulant and their use

Q211 marks★✓

Answer

• EDTA (ethylenediaminetetraacetic acid): Chelates calcium; used as the anticoagulant of choice for complete blood counts (CBC) as it best preserves cellular morphology
• Sodium citrate: Chelates calcium; used for coagulation studies (PT, aPTT) and for blood bank collection, as the calcium-binding is reversible on recalcification

Related Concepts

1. 1Basic Haematology Laboratory Techniques

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