Answer: EDTA tubes or microtainers with purple or Lavender top for CBC
Grenn PST(Plain or serum separator tube) / Plain Red top for electrolytes test.
Explanation:
The blood tube to use to collect a specimen for the CBC which means (complete blood count) is the EDTA tubes or microtainers with purple or Lavender top), of which the sample should be 50-60% full and gently mixed. The sample can be refrigerated to make the blood stable for up to 24 hours.
The blood tube to use to collect a specimen for the electrolytes test is the Grenn PST(Plain or serum separator tube) / Plain Red top.
2. The order of tube filling first differs with method,
- For collection of blood through skin puncture,
The EDTA Tube should be collected first before Plain or serum separator tube to reduce the risk of blood clotting which would affect the hematological test result.
- For collection through the vein
Plain or serum separator tube should be collected before the EDTA.
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