Why urine test take midstream urine?

popsune1

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A midstream urine (MSU) sample is used for urine tests because it provides a clearer result than the first or last part of the urine stream.

Explanation
  • Reduces contamination
    Collecting urine from the middle of the bladder reduces the risk of contamination from bacteria on your hands or skin around the urethra.

  • Provides a better sample
    A MSU sample is a better specimen for analysis than the first urine passed.

  • Confirms infections
    A MSU sample can confirm a urine infection and help determine the best antibiotics to treat it.

  • Accurate measurement
    A MSU sample is recommended for accurate measurement of certain urinary levels.
How to collect a MSU sample

  1. Cleanse the genital area with water.
  2. Start urinating.
  3. Stop the flow of urine after a few seconds.
  4. Place the collection container underneath the genital area.
  5. Release the urine flow again and collect the middle part of the urine stream.
 

Philipkee

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What the reason

Then when which urine test need to take start stream
Wah why suddenly got this random question?

Usually it’s for urine test to see if there is any infection - they wanna do culture on it

The first spurt of urine is “dirty” so they will ask you to pee a bit out, hold it in, then pee into a bottle for testing.

If on catheter, what I remember is they will clamp the catheter, let the urine accumulate there then use alcohol swab to clean the catheter and then use a syringe and needle to draw out the urine for testing

don’t recall anyone doing mid stream urine for urosheath

https://patient.info/mens-health/urine-infection-in-men/midstream-specimen-of-urine-msu
 

1982-1994

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Yes like I did straight aim into the container ,then as a result, bacteria was detected
Doc told me to aim mid stream, result was such a big difference

LU2DIYe.jpeg

Doc said my urine alb/cre ratio is higher than usual,so he told me to do the first pee into the tube for urine sample in the morning

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All cleared

Anyway, I just started to have on and off gout in my right big toe already so it is a sign to stop my indulgence in peanut butter
Switching my indulgence to costly pumpkin/macadamia/cashew butter (one bottle can tank 2 bottles of Adams PB)
 
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