1. What is Pregnancy Test Expiration Date?

The pregnancy test expiration date is the date after which the test may no longer provide accurate results. It is calculated by adding the shelf life (in months) to the manufacture date of the test.

2. How Does the Calculator Work?

The calculator uses the expiration date formula:

Where:

• \( \text{Manufacture Date} \) — Date when the pregnancy test was produced
• \( \text{Shelf Life} \) — Number of months the test remains accurate
• \( \text{Expiration Date} \) — Date after which test results may be unreliable

Explanation: The formula calculates the exact date when the pregnancy test chemicals may degrade and affect result accuracy.

3. Importance of Expiration Date

Details: Using an expired pregnancy test can lead to false positive or false negative results, which may cause unnecessary stress or delay in seeking appropriate medical care.

4. Using the Calculator

Tips: Enter the manufacture date found on the test packaging and the shelf life (typically 12-24 months). Ensure both values are accurate for reliable results.

5. Frequently Asked Questions (FAQ)

Q1: Why do pregnancy tests expire?
A: The chemical reagents in the test strip degrade over time, affecting their ability to accurately detect pregnancy hormones.

Q2: What is the typical shelf life of pregnancy tests?
A: Most pregnancy tests have a shelf life of 12-24 months from the manufacture date.

Q3: Can I use a test after the expiration date?
A: It's not recommended as expired tests may give inaccurate results, either false positives or false negatives.

Q4: Where can I find the manufacture date?
A: The manufacture date is usually printed on the test packaging or the individual test wrapper.

Q5: How should I store pregnancy tests?
A: Store in a cool, dry place away from direct sunlight and moisture to maintain accuracy until expiration.