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coffee and pregnancy test
I have all the sympotms of being pregnant so I took a test on Saturday (last day of my period, which i completely missed) and it was negitive.  I did drink coffee all morning and no water.  Can coffee make a test go negitive even if it could be positive?  I am confused and need some advise.
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Im not sure about the coffee, but it could just be too early to tell using a hpt. Maybe try another test in a week. I took a test a day after my missed period and it came up negative, took another a week later and it was positive.
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134578 tn?1463413330
You said you took a test on Saturday, but did not mention the time of day.  Did you take the test with concentrated (i.e., first morning) urine, or when you had been drinking fluids all day?   Fluids will affect the test whether they are coffee or water, if they dilute your urine too much for the test to be effective.  Read the instructions that came with the test and see if you did exactly what they said to do.
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I took the test later in the morning but not right away and I had allready had a lot of coffee.  I am 10 days late today.
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202436 tn?1326477933
WHAT you drink is not going to have an effect on a pregnancy test...what will is the AMOUNT you drink.  By drinking too many liquids it will concentrate your urine therefore you will have a lower amount of HCG.  It's best to test with first morning urine as it is the most concentrated and will give you an accurate result.  
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13167 tn?1327197724
I agree with everyone,  and in thinking about it,  I do think that drinking a lot of coffee might affect the test.  Not the coffee itself - but coffee is a diuretic and would cause your urine to be very dilute (clear),  you want the concentrated urine of first morning urine (darker).  
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thanks for all the help...I will take another one to see if there is a difference.
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