You’ve had your blood drawn, and now comes the waiting. You check your email. Then check it again. One of the most common questions people ask is: How long will it take to get my results?

The answer depends on the test. Most routine lab results come back within a few business days. Some take longer because of how the testing is done. In this blog, we'll explain what happens to your sample after you leave the lab, what can affect turnaround time, and general timeframes for common tests.

What Happens After Your Sample Is Collected

Once your sample is collected, it goes on a trip:

• Labeling and packaging. Your sample is labeled to match your order and packed for transport.
• Transport. Samples are picked up from the collection site and driven or shipped to a processing lab. Some collection sites are inside the processing lab. Many are not.
• Processing. At the lab, samples are sorted, spun in a centrifuge if needed, and loaded onto testing machines.
• Testing and review. The test runs, and results are checked before release. Some results are reviewed by lab staff before they go out.
• Reporting. Results are sent electronically, then delivered to you.

Each step takes time, and that's why even a test that only runs for a few minutes on a machine can take a day or more to reach you.

General Turnaround Times by Test Type

The times below are general ranges in business days after your sample reaches the lab. 

• Metabolic panels, lipid panels, and glucose: often 1 to 3 business days
• Hemoglobin A1c: often 1 to 3 business days
• Thyroid panels: often 1 to 3 business days
• Hormone panels: often 2 to 5 business days
• STD tests (urine and blood): often 2 to 5 business days
• Blood titers: often 2 to 5 business days
• QuantiFERON TB: often 3 to 5 business days
• Food sensitivity and allergy panels: often 5 to 10 business days
• Colon cancer screening (stool-based): depends on when the kit is returned and received 

What Can Slow Results Down

Even routine tests sometimes take longer than expected. Common reasons include:

• Weekends and holidays. Many labs run reduced schedules, and transport may not run. A sample collected on a Friday afternoon may not be processed until Monday.
• Specialty testing. Some tests are only run at certain lab locations, or only on certain days of the week.
• Confirmation testing. If a screening test comes back positive, some labs automatically run a second test to confirm it. This adds time but gives you a more reliable answer.
• Sample issues. If a sample is damaged, too small, or not labeled correctly, the lab may need a new one. This is rare, but it does happen.
• High volume. During busy seasons, labs can run behind.

Does No News Mean Good News?

Not necessarily. A delay usually just means your test is still in process. It doesn't mean something is wrong, and it doesn't mean everything is normal. Wait until your full results arrive before drawing any conclusions.

If it's been longer than the expected turnaround time, reach out to customer service to check the status of your order.

Partial Results

If you ordered several tests at once, you may see some results before others. That's normal. Faster tests are released as they're finished, while slower tests catch up. Your report will usually show which results are still pending.

Tips to Get Your Results Faster

• Go early in the week. Monday through Wednesday collections avoid weekend delays.
• Go early in the day. Morning samples are more likely to make the first transport pickup.
• Follow prep instructions. Fasting correctly and showing up hydrated helps avoid a redraw.
• Double-check your contact information. Make sure your email and phone number are correct when you order, so results reach you.

What to Do When Your Results Arrive

When your results come in, review each value against the reference range on your report. If anything is flagged or you have questions, share your results with a healthcare provider. If your report includes a critical result, contact a provider right away.

Fast, Private Results With eNational Testing

With eNational Testing, your results are sent straight to you. No waiting for a call back or a follow-up appointment just to hear your numbers. Order online, visit a collection site near you, and get answers fast.

Get started at enationaltesting.com or call 866-766-1631.