Microtainer Edta

These are small-volume blood collection tubes designed mainly for capillary sampling, especially when only a little blood is needed. Key details: Additive: EDTA (K2EDTA or K3EDTA) Cap color: Usually purple / lavender Sample type: Whole blood Volume: ~250 μL – 500 μL (varies by manufacturer) Mixing: Gently invert 8–10 times Main uses: Full Blood Count (FBC / CBC) Differential count Blood film / morphology HbA1c (method-dependent) ESR (micro methods)