On your lab requisition: Quest “CBC (includes Differential and Platelets)” (test code 6399)Labcorp “CBC, Platelet, No Differential” (test no. 028142)BioReference “CBC w/o DIFF (Hemogram)/PLAT. CT” (test code 0034-9)
The short answer
CBC (Complete Blood Count) measures WBC, RBC and Hemoglobin plus 6 more from a standard blood draw. At TestWell it costs $21.99 plus a $6 lab processing fee, needs no fasting, and results post in 1–3 business days. Physician-authorized with no doctor's visit or insurance needed; draw at Quest or Labcorp.
Hospital Lab
$80
cash pay
Other Labs
$35
+ lab fees
TestWell
$21.99
+ $6 lab processing fee
The basic Complete Blood Count measures red blood cells, white blood cells, hemoglobin, hematocrit, and platelets. It does not include the differential (breakdown of white blood cell types). It's a cost-effective option for routine screening when you don't need the full differential analysis.
Counts and characterizes red cells, white cells, and platelets — the broadest single screen for anemia, infection, and bleeding disorders.
Anyone doing an annual physical, investigating fatigue, frequent infections, easy bruising, or unexplained symptoms. The single most-ordered blood test in the US.
Sample Type
Blood draw
Fasting
Not required
Results In
1–3 business days
Performed At
Quest or Labcorp
9 biomarkers tested · 7 measured, 2 calculated from them
Your CBC (Complete Blood Count) results will include values for each of the 9 biomarkers tested, along with reference ranges. Results are reviewed by a licensed physician before being released to your secure portal.
If any values fall outside the normal range, your report will include guidance on what that may mean and recommended next steps. You'll receive an email notification when your results are ready, typically within 1–3 business days.
Typical reference range layout
Lab reports show where your value sits relative to established reference intervals—your physician interprets this in context for you. Already have results? Analyze them with your AI assistant against our physician-reviewed ranges.
No fasting required. No special preparation needed.
What can throw off this result
Physician-reviewed “Before your test” pages — what each factor does, for how long, and what to do about it.
A CBC (Complete Blood Count) test costs $21.99 at TestWell — $27.99 all-in when ordered alone, because the $6 lab processing fee is charged once per order, with no draw fee or physician fee added. Hospital outpatient labs typically bill around $80.00 self-pay for the same test, and often more. With insurance, what you pay depends on your deductible and your plan's negotiated rate; TestWell's price is fixed before the draw and is HSA/FSA-eligible.
| Where you order | Price | One test, all-in | Notes |
|---|---|---|---|
| TestWell (drawn at Quest or Labcorp) | $21.99 | $27.99 | Includes the one $6 lab processing fee, charged once per order |
| TestWell (drawn at BioReference — New York & New Jersey) | $18.99 | $24.99 | New York and New Jersey orders route to BioReference; Quest Health and Labcorp OnDemand don't take self-ordered draws in those states |
| Hospital outpatient lab, self-pay (typical) | $80.00 | $80.00 | Reference figure; hospital charges vary widely by facility and are often higher |
Lab test codes: Quest test code 6399 · Labcorp test no. 028142 · BioReference code 0034-9. Competitor prices are read from the linked public pages and re-checked regularly; the labs' sites may add taxes or change prices without notice.
Compare more: Quest Diagnostics price list · Labcorp price list · Quest vs Labcorp · Lab test price checker
Standard CBC counts each cell type. CBC with Differential breaks white cells down into 5 subtypes (neutrophils, lymphocytes, monocytes, eosinophils, basophils) — useful for distinguishing bacterial vs viral infections, allergic conditions, and some leukemias. We recommend CBC with Differential for almost everyone; it's only a few dollars more.
TestWell charges $21.99 — vs $29 at Quest Direct and typically $50-$100 at a hospital outpatient lab. Same Quest or Labcorp sample, same result, no insurance involved.
No fasting required. CBC can be drawn any time of day. If you're combining it with a Lipid Panel or CMP at the same draw, fast 9-12 hours for those.
85027 (CBC without differential) or 85025 (CBC with differential). Both are accepted for HSA/FSA reimbursement.
Annually for healthy adults. Every 3-6 months if you have a chronic condition affecting blood cells (iron deficiency, autoimmune disease, recent infection).
Most commonly iron deficiency — especially in menstruating women. Other causes: B12/folate deficiency, chronic disease, recent blood loss. Pair a CBC with Ferritin and Iron Panel to find the cause.
CBC (Complete Blood Count) test results are typically ready in 1–3 business days after your draw at Quest or Labcorp. TestWell emails you the moment they post, and your results dashboard shows each marker against its reference range with a plain-English explanation.
Smoking and nicotine, recent blood donation, alcohol and exercise can change a CBC (Complete Blood Count) test result without anything being wrong. Smoking and nicotine can raise RBC and WBC — tell the clinician; a high hematocrit in a smoker is usually smoking, not polycythemia. Recent blood donation can lower RBC and can shift MCV — wait 6–8 weeks after a whole-blood donation for an anemia baseline. Alcohol can raise MCV — reflects long-term intake; not a one-night effect. Exercise can raise WBC — rest the morning of the draw. Each factor is covered on our physician-reviewed "Before your test" pages; when one applies, the fix is usually to remove it and retest.
Order the CBC (Complete Blood Count) test online from TestWell for $21.99 (plus a $6 per-order lab processing fee) — no doctor's visit, referral or insurance needed. A licensed physician authorizes the order, then you walk into any Quest or Labcorp patient service center near you for the draw (the lab locator on our site lists the closest ones by ZIP code), and results arrive in 1–3 business days.
The CBC (Complete Blood Count) test is Quest Diagnostics test code 6399 ("CBC (includes Differential and Platelets)"), Labcorp test number 028142 ("CBC, Platelet, No Differential"), BioReference code 0034-9 ("CBC w/o DIFF (Hemogram)/PLAT. CT") (CPT 85027). TestWell orders it under those codes for $21.99 at Quest, Labcorp or BioReference — no doctor's visit or insurance required, results in 1–3 business days. Codes verified against the labs' catalogs in 2026.
Medically reviewed by Youmna DiStefano, MD · Last reviewed September 2026
Related guide
CBC With Differential Explained: What Each Value Means and How to Read Your Results
Related guide
How to Read Your Blood Test Results
Related guide
CBC vs CBC With Differential: What the 'Differential' Adds, When It Matters, and Which One to Order
TestWell Price
$21.99
+ $6 lab processing fee at checkout
No insurance needed · HIPAA compliant
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