Question

a) Provide 5 possible reasons for specimen rejection. (Can be due to handling/transport/quality of specimen...be specific)

b) How is a centrifuge balanced?

c) Which department(s) require a specimen to not be centrifuged and which specimens?

The questions were asked before, but they were not fully answered. Please do not copy and paste Thanks

Answer 1

a.rejected specimen reasons are

• Clotted specimen
• Improperly labelled specimen
• Incorrect sample container
• Inadequate sample
• Level error in haemogram samples.

b. When using centrifuge the concept of balance is very important because any irregularities may cause irregularity in the system. To balance, put samples, as they are directly across to each other. If only one tube balance with one blank tube with water. If 3 tubes put them in 1-7-13 and so on.

c. Whole blood is obtained in a tube with anticoagulant and not required to be centrifuged. In that case the tube is mixed thoroughly. Specimens for HIV testing do not require centrifugation. In pathology department no centrifugation required.