Complete Blood Count Test (CBC Test) with Differential
Complete Blood Count Test (CBC Test) with Differential can be requested without a referral, and this overview covers what to expect. A complete blood count with differential is a common blood test that measures the amounts and types of cells in your blood. It is often ordered to check for anemia, infection, or other blood-related conditions.
- Sample type
- blood
- Category
- Anemia & Iron
- Turnaround
- 1-3 business days
- Price
- $28
- Referral
- Not required
A complete blood count with differential is a common blood test that measures the amounts and types of cells in your blood. It is often ordered to check for anemia, infection, or other blood-related conditions.
What it measures
- Red blood cell count (RBC) — Number of red blood cells, which carry oxygen.
- Hemoglobin — Protein in red blood cells that carries oxygen; low levels can suggest anemia.
- Hematocrit — Percentage of your blood made up of red blood cells.
- White blood cell count (WBC) — Number of white blood cells, which help fight infection.
- Platelet count — Number of platelets, which help blood clot.
- Differential — Breakdown of the different types of white blood cells.
Who it is for
A healthcare provider may order this test during a routine checkup or if you have symptoms like fatigue, weakness, or signs of infection.
Preparation
No fasting or special preparation is usually needed. You can eat and drink normally before the test.
Results and what they mean
Results are reported as numbers for each cell type, often with a reference range. Your clinician interprets these results along with your symptoms and history. This information is not medical advice; talk with your healthcare provider about what your results mean.
How to order this test
- Choose the test and place a confidential order online.
- Select a certified collection site and pick a time that suits you.
- Have your specimen collected — most draws take only a few minutes.
- Review results in a secure portal, typically within 1–3 days.
Preparation, hours, and pricing vary by site; confirm details directly with the lab before your visit.
Availability by state
Direct-access online ordering for the complete blood count test (cbc test) with differential is available in most states. It is currently unavailable in 6 states:
Everywhere else you can order confidentially and collect your sample at a certified site. Browse by state →
Frequently asked questions
How is the test done?
A small sample of blood is taken from a vein in your arm, usually in a clinic or lab.
Will it hurt?
You may feel a quick pinch when the needle goes in, but it usually lasts only a moment.
When will I get results?
Results are typically available within 1 to 3 business days.
Do I need to fast?
No, fasting is not required for this test.