when the urine drug concentration is below the threshold level set by the laboratory performing the test.
Explanation:
False-negatives can occur when the urine drug concentration is below the threshold level set by the laboratory performing the test. Dilute urine, the duration of time between ingestion of the drug and time of testing, and the quantity of the drug ingested may affect the occurrence of false-negatives..#CarryOnLearning
Answers & Comments
Answer:
when the urine drug concentration is below the threshold level set by the laboratory performing the test.
Explanation:
False-negatives can occur when the urine drug concentration is below the threshold level set by the laboratory performing the test. Dilute urine, the duration of time between ingestion of the drug and time of testing, and the quantity of the drug ingested may affect the occurrence of false-negatives..#CarryOnLearning