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A 40-year-old member asked:

how long does it take for iv use cocaine to get out of your urine?

1 doctor answer4 doctors weighed in
Dr. Donald Jacobson
A Verified Doctoranswered
A US doctor answeredLearn more
Depends upon test: Pubmed review showed the range to be from 32 to 48 hours depending upon the cutoff points for the recognition of Cocaine metabolites and what cut off points were considered positive.

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A 35-year-old member asked:

Should I be concerned if my urine is brown?

2 doctor answers4 doctors weighed in
Dr. Ruth Crystal
Obstetrics and Gynecology 27 years experience
Yes: Brownish urine may be concentrated meaning that you are not drinking enough water. However, i would recommend calling your doctor's office for a urinalysis to make sure that nothing else more serious is going on.
A 22-year-old member asked:

Should my baby's urine be dark yellow?

2 doctor answers4 doctors weighed in
Dr. Irwin Berkowitz
Specializes in Pediatrics
No: This suggests most likely that the urine is concentrated and the baby needs more fluids, particularly if the baby is otherwise doing well.
A 21-year-old member asked:

Must I use an acid washed jug for my 24-hour urine collection?

2 doctor answers5 doctors weighed in
Dr. Slade Suchecki
Family Medicine 18 years experience
Probably: The use depends on what you are looking for in the urine. This is commonly used for heavy metal testing.
A 20-year-old member asked:

Can STDs be transmitted through urine?

2 doctor answers4 doctors weighed in
Dr. Marcus Degraw
Pediatrics 22 years experience
NO: No, transmission of HIV through urine has never been established and is not a risk. Unless, there is significant amount of blood in the urine and you have significant exposure to the bloody urine for a period of time. Other STDs are also highly unlikely to be spread by urine and cannot be spread by toilet seats or other surfaces of fomites or surfaces.
A 21-year-old member asked:

What are the differences between cocaine and methylphenidate?

2 doctor answers3 doctors weighed in
Dr. Mary Ann Block
A Verified Doctoranswered
A US doctor answeredLearn more
Very little: Cocaine and methylphenidate are very much alike. They both go to the same receptor site in the brain and can cause the same symptoms when taken the same way. They are so much alike that they are used interchangeably in medical research.

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Last updated Jun 24, 2014

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