Is this the same as the serum progesterone blood test?

No. Proov uses first-morning urine strips to track PdG qualitatively at home. The serum progesterone test uses a blood draw and reports a laboratory progesterone concentration.

Does this kit predict the most fertile days?

No. The product is framed around sustained PdG after ovulation, not predicting the most fertile days.

Fertility

Proov Progesterone Fertility Test Kit

Five first-morning urine strips qualitatively track PdG, a progesterone metabolite, at home; this is not the serum progesterone blood test.