We've been receiving the old style test through the post instead of the newer nose only.
Now I always get a faint positive on flowflex but this morning I've done one on DD2 and the line is slightly darker than what I normally get. That was the last flowflex so I've done an old style one which has come back negative.
I would think that both would pick it up surely? Any one had this happen, positive on one brand but negative on another?