Answer :
Final answer:
The recommended order for filling microcollection tubes from capillary punctures typically starts with blood culture bottles, followed by tubes with coagulants, tubes with other additives, and finally tubes with no additives to prevent contamination and ensure accurate test results.
Explanation:
The recommended order for filling microcollection tubes from capillary punctures is guided by protocols to prevent contamination and ensure the accuracy of test results. When performing the procedure, blood should be collected into the tubes in the following order:
- Blood culture bottles or vials (if microbiology tests are required).
- Tubes with coagulants (typically for clotting tests such as PT, APTT).
- Tubes with other additives (such as EDTA for complete blood count tests).
- Tubes with no additives (for serum tests).
This order is recommended to minimize the risk of contaminating the blood samples with additives from one tube to the next, which could potentially alter the results of some tests. It is also important to follow any specific instructions provided by your instructor or standard operating procedures in your lab, as they may have particular requirements for the order of tube filling.
