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because you wont know which factor affected your outcome if you change more than one variable.

I have already asked a question about pregnancy symptoms and it seems like I should take a test to see what is going on, i would love a BFP even if it is unexpected, more due to being on the pill and partners low fertility.

My partner and I are currently in different countries (only a few more weeks and he will be moving to live with me). Should I tell him I am going to do a test, or just do it and tell him if it is positive and then just forget it if it is negative?

Maybe it’s just me, but I tell my partner EVERYTHING. If my period is late, he knows it. If I take a test, negative or not, he knows it.

If you test only one variable at a time you can determine the effects of that variable. If you have two or more variables you cannot know which one affected the outcome of the experiment with 100% certainty. For instance, you are doing an experiment on what kills a plant, beer or soda. If you test both variables at the same time and give the plant beer, then 10 minutes later give it soda you cannot determine if it was the beer or the soda that killed it.

So if you had a positive test while on the pill it would be +ve.

It wouldnt be caused by other hormones such as FSH or LH?

no.. u only get hcg when ur pregnant.. so yes a positive does mean ur pregnant
the contraceptive pill does not alter the results of a pregnancy at all as oral contraceptives (birth control) do not contain HcG..

u can also get a positive from an ectopic pregnancy, and an ovarian cyst - but with both of these u dont get any symptoms.

If more than 1 product of the experiment is changed and produces a different outcome, you can not tell which product coused the change.

Say a door squeaks when you open it. To find out what causes the noise, you remove the knob and add grease to the hinges. The problem is fixed, but there is no way of knowing what caused the squeaking to cease.

This is my homework question which i dont understand at all "/

Well think about it this way. If I change two things say temperature and time of the experiment and the results are different than the control ( the control is the same experiment done without any changes). How could I know whether the temperature caused the change or the time caused the change? I could not. This is why only one variable should be tested so that one variable can be connected with a change in the experiment. Hope this makes things clear for you.

I think we can agree it was a great series with South Africa dominating the 1st test and India coming back fantastically and winning the 2nd test just before time ran out on the 5th day. This series was showcased the 2 teams who are clearly the best in Test cricket and was great to watch. If only it could have been longer, maybe 4 or 5 tests.

ઈ Congrats to India for winning this Test and retaining No. 1 spot.
ઈ Congrats to SA for winning first Test and putting up a great series. Well done.

not test and repair, not gold shield….test-only

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I got tested for all STD’s the other day, all Negative

I asked him did i also get tested for Syphilis & he said, no you only get tested for that if your pregnant?

now to me that just doesnt sound right? its just a simple blood test., why cant i also be tested for that too!? (even though im not pregnant …)

I’m not exactly sure why he’d tell you that - I think that’s just his personal preference. You need to find another doctor. ♥

Otherwise, you don’t know which variable affected the results. Separate tests require separate variables.