Each micro tube (or bullet) holds _____ cc of blood.

Each micro tube (or bullet) holds _____ cc of blood.

• A. 0.2 cc
• B. 0.3 cc
• C. 0.4 cc
• D. 0.6 cc

Answer: (A)

Micro tubes designed for capillary or fingerstick collections are purposefully small so you can obtain just the amount of blood needed without overfilling. The typical fill for these micro collection tubes is about 0.2 mL (0.2 cc). This amount matches what a single fingerstick drop can yield and works well with the tube’s additive and testing requirements, keeping the sample manageable for the lab to process. Larger volumes would require more blood than a single drop provides and could complicate collection or affect sample quality. So, 0.2 cc is the standard volume for these microtubes.

Micro tubes designed for capillary or fingerstick collections are purposefully small so you can obtain just the amount of blood needed without overfilling. The typical fill for these micro collection tubes is about 0.2 mL (0.2 cc). This amount matches what a single fingerstick drop can yield and works well with the tube’s additive and testing requirements, keeping the sample manageable for the lab to process. Larger volumes would require more blood than a single drop provides and could complicate collection or affect sample quality. So, 0.2 cc is the standard volume for these microtubes.