At-home blood test
Complement C3 & C4 — At-Home Blood Draw
Need a Complement C3 & C4? Skip the waiting room. Speedy Sticks sends a certified phlebotomist to your home or office to collect the sample, then routes it to the laboratory on your order — same lab order, same processing lab.
Also known as: C3 and C4 complement, complement test, C3 C4 blood test.
Get your Complement C3 & C4 done at home
- Certified phlebotomist collects your Complement C3 & C4
- Same lab order — your lab processes the sample
- Same-day and next-day availability
- No waiting room, no travel
What is a Complement C3 & C4?
Complement C3 and C4 are proteins that are part of the immune system. These tests are often used to help evaluate autoimmune and inflammatory conditions.
Fasting
Fasting is generally not required, but always follow your lab order's instructions.
Why this test is ordered
- Helping evaluate autoimmune disease such as lupus
- Investigating recurrent infections
- Monitoring a known condition
How an at-home draw works
Step 1
Book online
Schedule in minutes with your lab order for the Complement C3 & C4 and pick any available time window.
Step 2
We come to you
A certified phlebotomist arrives at your home or office — no waiting rooms, no commute.
Step 3
Specimen to the lab
We package and route your specimen to the laboratory on your order, with results reported to your provider.
Frequently asked questions
Can I get a Complement C3 & C4 done at home?
Yes. A certified Speedy Sticks phlebotomist comes to your home or office, collects the sample for your Complement C3 & C4, and routes it to the laboratory on your order. You keep the same lab order and the same processing lab.
Do I need to fast for a Complement C3 & C4?
Fasting is generally not required, but always follow your lab order's instructions.
Do I need a doctor's order?
Yes. A valid lab order from your provider is required. Speedy Sticks performs the collection only — your laboratory processes the sample and reports results to your ordering provider.
How much does it cost?
Collections start at $85, plus any lab fees billed separately by your laboratory. Most HSA/FSA cards are accepted.
Where do my results go?
Results are reported by the laboratory directly to your ordering provider. Speedy Sticks does not receive, store, or deliver test results — we handle collection and specimen logistics only.
Book your Complement C3 & C4 at home
A certified phlebotomist comes to you — same lab order, same-day availability.
Related tests & services
- Antinuclear Antibody (ANA)
- Histone Antibody
- Anti-Smooth Muscle Antibody (ASMA)
- All at-home tests
- At-home blood draw
- Wellness blood testing
Already have a lab order?
- Get your Quest Complement C3 & C4 drawn at home
- Get your Labcorp Complement C3 & C4 drawn at home
- All lab alternatives
Book your at-home blood draw by city
Speedy Sticks provides specimen collection only. A valid lab order from your provider is required, and your laboratory processes the sample and reports results to your ordering provider. This page is educational and is not medical advice; it does not provide reference ranges or interpret results.