Gain insight into the fertility hormones that matter. The Natalist Women’s Fertility Test powered by Everlywell provides insight into key hormones that impact your reproductive health to help you better navigate your fertility journey and measures five vital hormones that influence your fertility: estradiol, luteinizing hormone (LH), follicle-stimulating hormone (FSH), thyroid-stimulating hormone (TSH), and total testosterone. For regulatory reasons, this test is not available in New York state.