Vitamin B12 Test in Chantilly, VA
Measures serum vitamin B12 level — for clients investigating fatigue, neurological symptoms, or vegetarian/vegan diet adequacy. $99 flat, no insurance needed. Results in 24–72 hours.
Walk-in price
Vitamin B12 Test
- Blood sample
- Results in 24–72 hours
- Doctor’s order included
- HSA / FSA accepted
4500 Daly Drive, Suite 240, Chantilly, VA 20151
What this test screens for
Understanding the Vitamin B12
The Vitamin B12 Test is processed at the same reference labs that hospitals and major medical groups use, so your results come with the same reference ranges and methodology your physician expects. Measures serum vitamin B12 level — for clients investigating fatigue, neurological symptoms, or vegetarian/vegan diet adequacy.
With walk-in blood work in Chantilly, you decide exactly what you want to know about — no weeks-long wait for a primary-care referral, and nothing logged on your insurance record. The doctor’s order comes with the visit.
No insurance, no doctor’s referral, and no surprise bills — you see the full price before any sample is collected. HSA and FSA cards are accepted, and we can provide an itemized receipt for reimbursement.
Markers measured in this screening: Serum vitamin B12 (cobalamin) level. Your report lists each value next to the laboratory’s reference range, so anything outside the expected range is easy to spot and discuss with a provider — results inform that conversation, they do not diagnose a condition on their own.
Why people get this test
- Persistent fatigue, low energy, or weakness
- Tingling, numbness, or "pins and needles" in the hands or feet
- Brain fog, memory changes, or trouble concentrating
- A vegetarian or vegan diet, which can run low in B12
- Following up on anemia or a prior borderline B12 result
What to expect
From check-in to results — what your visit looks like
Most visits take under 15 minutes. Here’s the full arc, start to finish.
How to prepare
No fasting is required for this test. Stay normally hydrated. Bring a list of current medications so our staff can flag anything that might influence the result.
During your visit
A phlebotomist will collect a small blood sample from a vein in your arm — the draw itself takes about 30 seconds and most clients describe it as a quick pinch. The full visit from check-in to leaving is typically under 15 minutes.
Getting your results
Results land in our secure online patient portal once the reference lab completes processing. You log in with the credentials we send by email, view your report, and print or share it with your doctor as needed. We can also fax results to your physician at no additional charge. Most vitamin b12 test results are returned 24–72 hours.
Confidential
Your results never go through your insurance carrier.
Transparent
Price you see is price you pay.
Fast
Most results in 24–72 hours through our portal.
Doctor’s order
Included as part of every visit. No referral needed.
FAQ
Vitamin B12 Test — what people ask
Specific questions about the vitamin b12 test. For anything not covered, call 571-500-7030.
What are the signs of low vitamin B12?
Common signs include ongoing fatigue, weakness, tingling or numbness in the hands and feet, brain fog, mood changes, and a sore or swollen tongue. This blood test measures your serum B12 level so you can see where you stand. It screens for deficiency — it does not diagnose the cause, which a provider evaluates alongside your symptoms and history.
Will my primary-care doctor accept these results?
Yes. All blood work is processed at the same accredited reference labs hospitals and clinics use. Reports include the same reference ranges and methodology your physician is used to seeing.
Can I get a paper or fax copy of my results?
Yes. Results live in your secure online portal indefinitely, and we can print a paper copy at the lab or fax them directly to your physician at no additional charge.
How do I know if I should fast?
Tests measuring glucose, cholesterol, and most metabolic panels are best done fasting. Hormone, vitamin, and most thyroid panels do not require fasting. When in doubt, fast — water-only — and call us if you have questions before your visit.
You might also need
Other blood work tests
Other tests our Chantilly neighbors commonly add to a visit.
Annual Check-Up Panel
CBC, CMP, lipid panel and thyroid screen — the full picture for your annual physical.
Complete Blood Count (CBC)
Measures red and white blood cells, hemoglobin, hematocrit and platelets — a baseline blood-health screen.
Comprehensive Metabolic Panel (CMP)
14 markers covering kidney function, liver enzymes, glucose, electrolytes and protein levels.
Service area
We serve these communities
From our Chantilly lab near Westfields, we serve Centreville, Fairfax, Herndon, and the wider Fairfax County area.
Book your vitamin b12 test today.
Walk in or reserve a time online. Most visits take under 15 minutes.