A urine drug test helps detect illegal and prescription drugs in a person's body by analyzing the urine. This test is mainly done to check for the presence of alcohol, amphetamines, benzodiazepines, opiates or opioids, cocaine, and marijuana.
All the answers published in this website are written by verified medical doctors, therapists and health experts. The Content has been moderated by iCliniq medical review team before publication. Post your medical clarifications on iCliniq by choosing the right specialty and get them answered. Your medical queries will be answered 24/7 by top doctors from iCliniq.
Can a drug test be falsely negative due to excess intake of water?
Query: Hi doctor, I took a drug test and it came out negative, I am on Oxycodone 5 ml, Gabapentin, Methocarbamol and Lisinopril. How could it come out negative while taking these drugs? I drink a lot of water. Is this the cause? How does this happen? Please help. Read Full »
Answer: Hi, Welcome to icliniq.com. Two common potential causes for false negative opiate tests are using the wrong test for a specific opiate or having an insufficient concentration of an opiate in the sample. Other possible reasons can be due to dilution. For example, ingesting a substantial amount of wa... Read Full »