Interleukin-4, Serum
Access Labcorp Draw
Sample type: Serum
Requires fasting: No
Phlebotomy required
Details
This test measures interleukin-4 (IL-4), a signaling protein that helps regulate immune responses and plays a key role in allergic and inflammatory processes. IL-4 levels may be evaluated to assess immune system activity and support the investigation of allergies, asthma, autoimmune conditions, and other immune-related disorders.
- IL 4, Serum
Estimated days for results: Results should arrive 6 business days after the lab receives samples.
This test measures interleukin-4 (IL-4), a signaling protein that helps regulate immune responses and plays a key role in allergic and inflammatory processes. IL-4 levels may be evaluated to assess immune system activity and support the investigation of allergies, asthma, autoimmune conditions, and other immune-related disorders.
What type of sample is required for this test?Serum
6 business days
Blood Draw Options with Fullscript
Fullscript offers several convenient phlebotomy options to complete your lab testing:
Access Labcorp Draw – Labcorp PSC
- Location: Visit a nearby Labcorp Patient Service Center.
- Cost: $10 sample collection fee (paid during checkout).
- Scheduling: Schedule your appointment here. Appointments are recommended to reduce wait times. Walk-ins are accepted, but may experience delays. Aim to arrive 15 minutes before your appointment.
- Collection Instructions:
- Bring a valid ID.
- Bring your digital or printed requisition form, available in the Labs tab of your Fullscript account.
- Check-in: Follow check-in kiosk steps when you arrive at the Labcorp draw site.
- More Info: Access Labcorp blood draw guide
Getlabs Mobile Phlebotomy
- Location: Sample collection at your home or office.
- Cost: $85 sample collection fee (paid during lab order checkout).
- Availability: Available in most locations – enter your ZIP code during checkout to confirm.
- Scheduling: Schedule your appointment here through your Fullscript account.
- Collection Instructions:
- Have your digital or printed requisition form and valid ID ready.
- Your phlebotomist will contact you by phone to coordinate arrival.
- More Info: Getlabs blood draw guide
State restrictions:
Patient can't order this test if they are located in Hawaii, Puerto Rico, New Jersey, New York, or Rhode Island




