Final answer:
For immunologic testing at room temperature, simple red top tubes (without additives) should clot completely in 30 to 45 minutes on average. Therefore, the correct option is 3.
Step-by-step explanation:
The time frame for complete clotting of plain red top tubes (no additives) for immunologic testing at room temperature is typically 30 to 45 minutes. During this period, the blood in the tubes undergoes coagulation, forming a clot that separates from the serum.
This clotting process is crucial for obtaining a clear serum sample, which is essential for various immunologic tests. Waiting for the appropriate clotting time ensures that the blood has adequately formed a stable clot, allowing for proper separation of serum and facilitating accurate and reliable test results.
It is important for the phlebotomist to adhere to the recommended clotting time to ensure the integrity of the specimen and the validity of the immunologic tests conducted on the collected samples.
Therefore, the correct option is 3.
Your question is incomplete, most probably the complete question is:
A phlebotomist has drawn a series of plain red top tubes (no additives) for immunologic testing. At room temperature, complete clotting of these tubes will occur in what time frame? 1 5 to 10 minutes 2 15 to 20 minutes 3 30 to 45 minutes 4 60 to 70 minutes
A phlebotomist has
drawn a series of plain red top tubes (no additives) for
immunologic testing. At room temperature, complete clotting
of these tubes will occur in what time frame?
1
5 to 10 minutes
2
15 to 20 minutes
3
30 to 45 minutes
4
60 to 70 minutes