CupcakeMummy
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I don't know about you girls but Digis always baffled me how they worked.
So DH and I being nosey as we are decide to crack our first one open to look at its insides and what a 'Pregnant 1-2' looked like on the sticks inside.
And then I of course wanted to do the same to our 2-3 and 3+ for comparative reasons.
As you can see the first line (going left to right) on the bottom stick of each test. Appears to be the test line a they're all similar colours.
An then the second line on that stick and the line on its own on the other stick appear to be HCG lines. Although I don't have a not pregnant test to compare.
But you can see on my 3 tests how those lines get darker top to bottom from my 1-2 to 2-3 to 3+.
And the test inside appears to have little sensors that detect how dark the lines are and read from that.
So DH and I being nosey as we are decide to crack our first one open to look at its insides and what a 'Pregnant 1-2' looked like on the sticks inside.
And then I of course wanted to do the same to our 2-3 and 3+ for comparative reasons.
As you can see the first line (going left to right) on the bottom stick of each test. Appears to be the test line a they're all similar colours.
An then the second line on that stick and the line on its own on the other stick appear to be HCG lines. Although I don't have a not pregnant test to compare.
But you can see on my 3 tests how those lines get darker top to bottom from my 1-2 to 2-3 to 3+.
And the test inside appears to have little sensors that detect how dark the lines are and read from that.
Haha I love this! Wish I'd thought to look before 
