How JustAnswer Works:

  • Ask an Expert
    Experts are full of valuable knowledge and are ready to help with any question. Credentials confirmed by a Fortune 500 verification firm.
  • Get a Professional Answer
    Via email, text message, or notification as you wait on our site.
    Ask follow up questions if you need to.
  • 100% Satisfaction Guarantee
    Rate the answer you receive.

Ask Dr. D. Love Your Own Question

Dr. D. Love
Dr. D. Love, Doctor
Category: Medical
Satisfied Customers: 13706
Experience:  Family Physician for 10 years; Hospital Medical Director for 10 years.
21597572
Type Your Medical Question Here...
Dr. D. Love is online now
A new question is answered every 9 seconds

What is first Void urine I took a std test and on the results

Customer Question

What is "first Void urine"? I took a std test and on the results it said only accurate with a first void urine sample. I called them and they told me that it means an "unclean" urine sample. But I asked some other people and they say it means the first pee of the day
Submitted: 3 years ago.
Category: Medical
Expert:  Dr. D. Love replied 3 years ago.

A first void urine sample is the first urine that is passed (voided) in the day (or upon arising if on an altered sleep schedule). The first voided urine is typically the most concentrated, since there has been no oral intake of fluids during the night. As the day progresses and there is intake of fluids, the urine becomes less concentrated. Since many urine tests are looking for a certain concentration of a substance, the most concentrated urine would be the most sensitive. For these tests, if the urine is collected later in the day, the results are still fairly accurate and are reliable if positive, but would have a higher incidence of false negatives.

 

Customer: replied 3 years ago.
Is a the first urine of the day needed for chlamydia test? I gave them my 2nd urine of the day with no food and only a few cups of water before I gave the sample
Expert:  Dr. D. Love replied 3 years ago.

Since the report said that it was to be done on a first voided urine sample, that would be preferred. However, the second urine of the day with only a small amount of water would still be quite accurate.

 

Dr. D. Love, Doctor
Category: Medical
Satisfied Customers: 13706
Experience: Family Physician for 10 years; Hospital Medical Director for 10 years.
Dr. D. Love and 5 other Medical Specialists are ready to help you
Expert:  Dr. D. Love replied 3 years ago.

I have done some research looking for the sensitivity of urine later in the day, and the tests would still be very accurate if done later in the day on the first portion of the urine that is passed, as long as it has been at least an hour since last urination. Therefore, some tests will also use the term of first void to refer to this initial portion of a sample collected at least an hour since last urination.

 

JustAnswer in the News:

 
 
 
Ask-a-doc Web sites: If you've got a quick question, you can try to get an answer from sites that say they have various specialists on hand to give quick answers... Justanswer.com.
JustAnswer.com...has seen a spike since October in legal questions from readers about layoffs, unemployment and severance.
Web sites like justanswer.com/legal
...leave nothing to chance.
Traffic on JustAnswer rose 14 percent...and had nearly 400,000 page views in 30 days...inquiries related to stress, high blood pressure, drinking and heart pain jumped 33 percent.
Tory Johnson, GMA Workplace Contributor, discusses work-from-home jobs, such as JustAnswer in which verified Experts answer people’s questions.
I will tell you that...the things you have to go through to be an Expert are quite rigorous.
 
 
 

What Customers are Saying:

 
 
 
  • I feel so much better today, and upon further investigation believe that there is a chance that the responses I got saved me from a serious, even life threatening situation. I am very grateful to the experts who answered me. Susan O. USA
< Last | Next >
  • I feel so much better today, and upon further investigation believe that there is a chance that the responses I got saved me from a serious, even life threatening situation. I am very grateful to the experts who answered me. Susan O. USA
  • I can go as far as to say it could have resulted in saving my sons life and our entire family now knows what bipolar is and how to assist and understand my most wonderful son, brother and friend to all who loves him dearly. Thank you very much Corrie Moll Pretoria, South Africa
  • I thank-you so much! It really helped to have this information and confirmation. We will watch her carefully and get her in for the examination and US right away if things do not improve. God bless you as well! Claudia Albuquerque, NM
  • Outstanding response time less than 6 minutes. Answered the question professionally and with a great deal of compassion. Kevin Beaverton, OR
  • Suggested diagnosis was what I hoped and will take this info to my doctor's appointment next week.
    I feel better already! Thank you.
    Elanor Tracy, CA
  • Thank you to the Physician who answered my question today. The answer was far more informative than what I got from the Physicians I saw in person for my problem. Julie Lockesburg, AR
  • You have been more help than you know. I seriously don't know what my sisters situation would be today if you had not gone above and beyond just answering my questions. John and Stefanie Tucson, AZ
 
 
 

Meet The Experts:

 
 
 
  • Dr. Thomas, MD

    Board Certified Physician

    Satisfied Customers:

    46349
    Internal Medicine--practice all of internal medicine, all ages, family, also Integrative, CAM, etc
< Last | Next >
  • http://ww2.justanswer.com/uploads/DR/DrThomasMd/2012-7-25_134438_Imagess1.64x64.jpg Dr. Thomas, MD's Avatar

    Dr. Thomas, MD

    Board Certified Physician

    Satisfied Customers:

    46349
    Internal Medicine--practice all of internal medicine, all ages, family, also Integrative, CAM, etc
  • http://ww2.justanswer.com/uploads/MY/mysticdoc/2012-6-8_15615_mysticdoc3.64x64.jpg Dr. D.J.'s Avatar

    Dr. D.J.

    Board Certified Physician

    Satisfied Customers:

    14679
    MD
  • http://ww2.justanswer.com/uploads/agketch/2008-7-14_184046_drketchresized.jpg Dr. Ketch's Avatar

    Dr. Ketch

    Board Certified Physician

    Satisfied Customers:

    76
    Medical Degree, Former Assistant Professor at School of Medicine at Yale University
  • http://ww2.justanswer.com/uploads/FA/FamilyPhysician/2013-8-31_191624_JA550x500Photo.64x64.jpg Family Physician's Avatar

    Family Physician

    Doctor

    Satisfied Customers:

    2562
    Emergency Medicine and Family Practice for over 26 years
  • http://ww2.justanswer.com/uploads/DR/drappapo/2013-8-16_22576_drdavid.64x64.jpg Dr. David's Avatar

    Dr. David

    Board Certified Physician

    Satisfied Customers:

    224
    Treat children/young adults, former chief resident, multiple publications
  • http://ww2.justanswer.com/uploads/DrDLove/2009-08-12_141522_DrDLove.jpg Dr. D. Love's Avatar

    Dr. D. Love

    Doctor

    Satisfied Customers:

    11961
    Family Physician for 10 years; Hospital Medical Director for 10 years.
  • http://ww2.justanswer.com/uploads/CO/commissure/2011-4-15_192514_REISD20080926JR1090.64x64.jpg Dr. David's Avatar

    Dr. David

    Board Certified Physician

    Satisfied Customers:

    10667
    Experienced Physician trained in New York City. I'm ready to help.
 
 
 
Chat Now With A Doctor
Dr. D. Love
Dr. D. Love
Doctor
13706 Satisfied Customers
Family Physician for 10 years; Hospital Medical Director for 10 years.