Home use kits for determining a women's fertile period depend on the detection the of hormone in the urine . This hormone is

Options

A. Progesterone
B. Estradiol
C. hCG
D. LH

Answer

**Step-by-Step Solution:**

1. **Understanding the Question**: The question asks for the hormone detected in urine by home use kits that determine a woman's fertile period.

2. **Identifying the Relevant Biological Process**: The fertile period in women is associated with the menstrual cycle, which typically lasts about 28 days. This cycle includes several phases: menstruation, follicular phase, ovulatory phase, and luteal phase.

3. **Focusing on the Ovulatory Phase**: The ovulatory phase is crucial because it is during this phase that the ovum (female gamete) is released from the ovaries. This release is essential for fertilization to occur.

4. **Recognizing the Role of Hormones**: The release of the ovum is triggered by a specific hormone. In the context of the menstrual cycle, the hormone responsible for triggering ovulation is the luteinizing hormone (LH).

5. **Understanding the Detection Method**: Home use kits for determining the fertile period work by detecting the presence of this hormone in urine. A surge in luteinizing hormone indicates that ovulation is imminent, marking the peak of fertility.

6. **Conclusion**: Therefore, the hormone that home use kits detect in urine to determine a woman's fertile period is the luteinizing hormone (LH).

**Final Answer**: The hormone is Luteinizing Hormone (LH).

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