Lab Test Errors

Lab tests are very reliable, but no diagnostic test is perfect. Occasional variations can happen.

Why results can vary

Unexpected results can come from several factors, including:

• Normal biological variation
• Sample handling or processing issues
• Preparation issues, such as not fasting (when required) or being dehydrated

If a result looks surprising, it does not automatically mean something is wrong. It may reflect a temporary fluctuation in your body or a specific condition at the time of testing.

Why tracking trends matters

Rather than treating a single test as a definitive answer, it can be more helpful to track trends over time:

• Establish a baseline
• Test periodically to see patterns and changes
• Use your results to make more informed decisions about your health