Blood vs. Urine

“How do Proov tests compare to a progesterone blood test?” I get asked that question almost on a weekly basis. The simple answer is that blood progesterone levels and urine progesterone metabolite (PdG) levels correlate extremely well. The research is solid, but I...

What exactly is PdG and why do I need to test my levels?

What exactly is PdG and why do I need to test my levels? What exactly is PdG? Progesterone is the hormone released after ovulation and is required to reach certain levels in order to support a pregnancy. Pregnanediol, or PdG for short, is the main urine metabolite of...

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