QNS

QNS (Quantity Not Sufficient) is a term used in the medical field to denote that the quantity of a sample provided for laboratory testing is not sufficient to perform the test. This term is commonly used in clinical laboratories and hospitals when the sample volume does not meet the minimum requirement for the test procedure.

Overview

The term QNS is used to indicate that the sample volume is not enough to perform the required laboratory tests. This can occur due to various reasons such as improper sample collection, leakage during transport, or due to the nature of the test that requires a larger volume of sample. When a sample is marked as QNS, it means that the test cannot be performed and a new sample needs to be collected.

Causes

There are several reasons why a sample might be marked as QNS:

• Improper Sample Collection: This is the most common cause of QNS. If the sample is not collected properly, it might not meet the minimum volume requirement for the test.

• Leakage During Transport: If the sample container is not sealed properly, there might be leakage during transport which can result in insufficient sample volume.

• Nature of the Test: Some tests require a larger volume of sample. If the collected sample volume is not enough for such tests, it will be marked as QNS.

Impact

A QNS result can have several impacts:

• Delay in Diagnosis: A QNS result can delay the diagnosis as a new sample needs to be collected and tested.

• Increased Cost: Collecting a new sample can increase the cost of testing.

• Patient Discomfort: The patient might have to undergo the discomfort of sample collection again.

Prevention

To prevent QNS, it is important to follow the correct sample collection procedures and ensure that the sample container is sealed properly. The volume of the sample collected should also meet the requirement of the test.

See Also

• Clinical laboratory
• Medical test
• Sample (medicine)

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