What is a common cause of specimen rejection in laboratories?

What is a common cause of specimen rejection in laboratories?

The most common reasons for specimen rejection were contamination (n=764, 35.1%), inappropriate collection container/tube (n=330, 15.2%), quantity not sufficient (QNS) (n=329, 15.1%), labeling errors (n=321, 14.7%), hemolyzed specimen (n=205, 9.4%), and clotted specimen (n=203, 9.3%).

What are some of the criteria for a blood sample to be rejected by the lab?

Examples of sample rejection criteria

• Unlabelled or mislabelled samples.
• Duplicate samples. Most duplicate samples received on the same day are unacceptable and should not be processed.
• Leaky containers.
• Contaminated samples.
• Inappropriate sample sources.
• Delayed transport time and sample processing.

What are some reasons for inability to obtain a blood specimen?

Read on to find out five causes of difficult blood draws.

• Small or Hard-to-Find Veins. This is one of the most common causes of a difficult blood draw.
• Inelastic Veins.
• Scars from Intravenous Drug Use.
• Chemotherapy.
• Students in Medical Lab Tech Courses Should Be Mindful of Trypanophobic Patients.

Why is a CBC specimen rejected?

Reasons for rejection included hemolysis, clotting, insufficient quantity for test, time delay, incorrect temperature, loss of specimens during transport, and incorrect labeling (Table ​ 1).

What must be done if the phlebotomist was unable to collect blood specimen on the patient?

If the patient is unable, you should continue to apply pressure to the site until bleeding has stopped. Failure to apply adequate pressure can result in a hematoma, or bruise, to the draw site. Tourniquets are discarded immediately after use.

Which of the following is a reason for a sample to be rejected by QNS?

Which of the following is a reason for a sample to be rejected by the QNS? The lab is backed up and one of your patients specimen testing is delayed for more than an hour after the collection- what should you do? Tell the patient thy will have to come back to repeat the test.

Why is Hemolyzed blood rejected?

Serum/plasma samples submitted for potassium measurement are quite frequently rejected for analysis because they show the telltale signal of hemolysis, i.e. a reddish discoloration due to the presence of hemoglobin. …

Is it possible to detect hemolysis in CBC?

Detecting hemolysis in hematology specimens on a routine basis is challenging. To visually detect hemolysis in CBC specimens, the EDTA tubes would have to sit for a period of time in order to allow the natural separation of red cells from the plasma.

What are the reasons for a specimen being rejected?

In general, specimens will be rejected for the following reasons: Specimens which are improperly labeled. Specimens in which the quantity is not sufficient for proper processing.

What causes a blood test to be rejected?

• Hemolyzed or clotted blood specimens (for many tests). In addition to the previously mentioned general criteria, so me specimens have additional specific criteria for rejection. The most common reasons to reject a specimen are due to the addition of a preservative (such as formalin or alcohol).

What happens when a sample is clotted in a hemogram?

Furthermore, as soon as we know the sample is clotted, the test is cancelled in the computer. For samples submitted through the Samples for Hematology, we cancel hemograms or tests involving counts if the sample is clotted.