Some lab tests require fasting for 10 to 12 hours before your appointment. Bring a valid photo ID and your lab order form, and follow any preparation instructions provided to ensure accurate results.
Fasting: Required for some tests, typically 10 to 12 hours
What to bring: Photo ID and lab order form
Arrival: Arrive 10 to 15 minutes early
Payment: No payment needed at the lab
What to Do Before Your Test?
Check your test instructions
Review your lab order form and confirmation email for specific preparation requirements. Some tests have unique instructions.
Follow fasting requirements
If your test requires fasting:
Do not eat for 10 to 12 hours before your appointment
Water is generally allowed
Avoid coffee, even black coffee
If you are unsure whether fasting is required, it is safest to fast for morning appointments unless instructed otherwise.
Review medications and supplements
Most prescription medications can be continued, but some may affect test results.
Examples:
Hormone medications may affect hormone tests
Steroids can affect glucose levels
Biotin and supplements may impact certain lab results
If you are unsure, consult your healthcare provider before your test.
What to Bring to Your Appointment
Bring the following:
A valid photo ID
Your lab order form/s from Goodlabs, printed or on your phone
Important:
Do not bring insurance cards
You do not need to pay at the lab
What Happens at the Lab
Check-in
Arrive 10 to 15 minutes early
Present your ID and lab order form
Confirm that your test is prepaid
Blood draw
Typically takes 5 to 10 minutes
Performed by trained professionals
You can communicate any concerns during the process
After the test
Apply pressure to the draw site
Keep the bandage on for a few hours
Avoid heavy lifting with that arm for 24 hours
Resume normal activities unless otherwise advised
Timing Your Test
Best time for testing
Morning appointments are recommended for:
Fasting tests
Hormone tests
Afternoon or evening
Suitable for:
Non-fasting tests only
Common Preparation Issues
I forgot to fast.
If fasting was required, it is best to reschedule your test to ensure accurate results.
I drank coffee before my test.
Coffee can affect several test results. If your test requires fasting, consider rescheduling.
I am feeling unwell.
Illness can affect lab results. You may want to reschedule your test if you are not feeling well.
Tips for a Smooth Experience
Stay hydrated unless instructed otherwise
Wear clothing with loose sleeves
Get enough sleep the night before
Plan a meal after your test if fasting
Frequently Asked Questions
How long should I fast?
Most fasting tests require 10 to 12 hours without food.
Can I drink water while fasting?
Yes, water is generally allowed unless otherwise instructed.
Can I take my medications?
Most medications can be taken, but check with your healthcare provider if unsure.
What should I bring to the lab?
Bring a valid photo ID and your lab order form/s.
When to Contact Support
Contact support if:
You are unsure about your preparation instructions
You need to reschedule your appointment
You have questions about your specific test requirements
Provide:
Your order confirmation number
Details of your question
Related Topics
Support
If you have any questions or need assistance, our support team is here to help. Contact us anytime at [email protected]. Our team typically responds within 24–48 hours for process-related questions.