Clearblue - blank circle straight to static

[GentleSloth]

I’ve been using the clearblue ovulation tests.

i have a 30 day cycle. Started testing day 10 - blank circle, day 11 - blank circle, day 12 - static smiley.

i was just wondering if this is normal?

Hello I can provide you some insights. I had a CP on 7/5/24 so my LH levels are fluctuating after the bleed.
CD10: blank circle
CD11: Static smiley
That was my first LH rise, TC ratio is 0.55
CD12: didn't check, TC ratio is 0.14
CD13: It was blank so I tested again, Static smiley face, TC ratio is 0.62
That was my second LH rise
CD14 - CD16: didn't check, TC ratio was 0.18 on CD16

Last cycle before CP was a normal one:
I used premon app, LH easy at home strips and Clearblue Advanced Digital Ovulation Tests.
LH easy at home strips: There was a LH peak on CD16
Premon app: Also a peak on CD16
Clearblue Advanced Digital Ovulation Tests: It can detect 4 or more fertile days. It started to have a flashing smiley face on CD12 (high fertility). It started to have a static smiley face on CD15 (peak fertility) and it stayed the same for 48 hours.
So, they were very precise.

In conclusion: CB digital ovulation is very sensitive and a sudden rise can cause it to show static smiley face.