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how long will urine sample stay fresh

A member asked:
Dr. Zohreh Soltani
8 years experience Nephrology and Dialysis
Well,: Thc is non-existent in urine, when screening for urine it is only the metabolites of the drug that are tested for. For a frequent user, the substance ... Read More
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8 thanks
Dr. Gurmukh Singh
48 years experience Pathology
Depends : It would depend on how the urine sample is stored. If stored frozen at -70 it could hold forever.

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A 39-year-old member asked:
Dr. James Cain
35 years experience Nephrology and Dialysis
Depends : Some things such as glucose must be tested pretty quick as they are consumed by cells and bacteria in the urine. Cells deteriorate quickly, bacteria m ... Read More
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6 thanks
A 34-year-old male asked:
Dr. Robert Grindstaff
37 years experience Addiction Medicine
It varies: occasional use up to 4 weeks chronic use 6 weeks.
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1 comment
A male asked:
Dr. Randy Baker
39 years experience Holistic Medicine
About 8 hours, no: Most of the chemicals in green tea are excreted within 8 hours, though trace amounts might persist up to 24 hours. I don't know why anyone would be te ... Read More
A male asked:
Dr. Matt Wachsman
35 years experience Internal Medicine
Quite a bit of time: the first thing is that fentanyl is a long acting drug mainly because of the time it takes to get out of the patch and into the person. The time start ... Read More
A 18-year-old female asked:
Dr. George Valdez
Specializes in Family Medicine
Now: Should be clear by now. You can do over the counter test to confirm.
2
2 thanks
A 38-year-old female asked:
Dr. Donald Colantino
60 years experience Internal Medicine
Alcohol test: Some testing techniques can detect alcohol in the urine for up to 80 hours even when there is no detectable alcohol in the blood.
A 18-year-old female asked:
Dr. J. Blake Perkins
20 years experience Dentistry
Depends: Nicotine can stay in your system from as little as 3-4 days, up to 3 weeks. It also depends on what you are smoking...If it is marijuana, thats a dif ... Read More
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2 thanks
A 54-year-old male asked:
Dr. Michael Perez
36 years experience Internal Medicine
A few hours: Generally, 24 to 72 hours. the manufacturer of the containers or the lab you use may be a source of information on how long to preserve the specimen ... Read More
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1 thank
A 38-year-old member asked:
Dr. Zohreh Soltani
8 years experience Nephrology and Dialysis
Well,: A urine test checks different components of urine, a waste product made by the kidneys. A regular urine test may be done to help find the cause of sym ... Read More
5
5 thanks

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