Last modified: September 15, 2025
Lab testing instructions
Patients
Fullscript provides clear lab testing instructions to help you prepare and complete your test. Have questions about preparing or collecting your sample? Our support team is here to help.
Tip!
After reviewing your preparation instructions, set a reminder — whether it’s on your phone or a sticky note — to help you remember any changes to your routine, like stopping a supplement or fasting.
How to find your testing instructions
You can find your testing instructions in your account by following these steps:
- On the My health page, click the Labs tab.
- Find the test you’d like the instructions for and click View details.
- Scroll to the Preparation instructions drawer and click to open it.
The instructions from the lab company will be in this drawer.
In your treatment plan, your provider may have also added their own personalized message for you based on your medical history.
Specialty lab instructions
If you’ve ordered testing from a specialty lab, you’ll receive a test kit by mail. Instructions are available in your Fullscript account and included inside the test kit. You’ll also receive an email after checkout outlining the next steps for completing your test.
Your instructions include everything you need to prepare for your test, collect your sample, and return it to the lab. They may include:
- How and when to collect your sample
- Fasting requirements
- Foods to avoid
- Fluid intake
- Supplements and medications to pause
Note:
If your specialty test requires phlebotomy, wait until your kit arrives before scheduling a blood draw. You’ll need the included materials for your appointment.
Quest & Access Labcorp instructions
If you’ve ordered blood testing through Quest Diagnostics or Access Labcorp Draw, you’ll receive a digital requisition form, not a physical test kit. All your instructions will be available in your Fullscript account.
You may need to fast for up to 8 hours before your blood draw. If so, it will be noted in the test instructions.
Tip!
Fasting means you should not eat or drink anything except plain water during that time. If fasting is a challenge, book your blood draw appointment for early in the morning and bring a drink and snack to enjoy afterward.
Avoid waiting until the day of your blood draw appointment to determine if you need to fast. This could lead to rescheduling your appointment or receiving inaccurate results. If you’re unsure if fasting is required, contact your practitioner or Fullscript support.
