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A urine sample usually lasts up to 7 days if frozen.

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12y ago

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How long can a urine sample stay good before being analized for a drug screening?

about two months...


How do you know if your sperm in good?

Get a fresh sample tested in a laboratory !


How long is a urine sample good for if frozen?

It's not good anymore for testing once cold, it has to be fresh warm urine for the test to work properly.


Will a doctor know if there is marijuana in urine if it is just a general checkup?

not unless you, or in the case you are a minor you're parents, request a drug screening. You can't be drug tested without knowing you're being tested first, it's illegal. On the other hand who knows what these doctors do with your urine! Good Luck! -J


How long can a urine sample stay good before being analized?

== == That depends on what you're testing for. Urine drug levels are good at room temp or in the fridge for several days. Microalbumin testing is also good for several days in the fridge. However, if the urine is being collected for a routine urinalysis or a microscopic, the urine needs to be tested as soon as possible. Cellular components, bilirubin, and urobilinogen break down quickly after specimen collection, and bacterial growth causes glucose to decrease and protein and pH to increase. In my laboratory we only accept urines for urinalysis within 2 hours of collection if held at room temp, or within 4 hours if kept refrigerated.


How long are urine samples good for testing?

If properly sealed and stored, urine samples are good for testing up to 24 hours after the sample given. The urine sample should be in a sterile container within a sealed plastic bag and stored in a refrigerator.


When is a urine sample no good to a lab?

A urine sample may not be good for lab testing if it is contaminated with water, soap, or other substances, as this can affect the accuracy of the results. Additionally, if the sample has been improperly stored or is too old, it may not provide reliable results.


How long can a urine sample be held for testing before it is no good?

Urine samples can typically be stored at room temperature for up to 2 hours before they start to degrade. However, for more accurate results, it is best to refrigerate the sample and test it within 24 hours. After that time, the sample may no longer provide accurate test results.


How do you react when your doctor tells your parents you are being tested for cancer?

I would want to be tested for cancer. It will probably be good to know if i got cancer


How do you dilute urine for a lab test?

There is none. Most labs cannot get a good reading if the urine sample is very diluted and will know this is the reason. At best it would require submitting another sample to be tested. Some states consider submitting a diluted sample as a violation and will still obtain another to get a good reading.


How do you find your HDL cholesterol?

HDL cholesterol is known as the good kind of cholesterol. You can have your levels tested at your doctor's office. A blood sample from your vein or finger will be need.


How many variable should be tested and isolated in a good experiment?

One. If there is only one variable being tested, when you compare it to the control, you know that was the cause of a change.