The CBC with Differential is one of the most commonly ordered blood tests, providing a comprehensive snapshot of your overall health through detailed blood cell analysis.
The Complete Blood Count (CBC) with Differential is one of the most commonly ordered blood tests, providing a comprehensive snapshot of your overall health. It measures red blood cells, white blood cells, platelets, hemoglobin, and hematocrit levels.
This test is essential for detecting infections, anemia, blood disorders, and monitoring overall health. The differential breaks down white blood cells into five types (neutrophils, lymphocytes, monocytes, eosinophils, basophils), helping identify specific conditions.
Price
$6
Results
1 days
Lab Network
Quest
Fasting
Not Required
What's Measured
What This Test Measures
This test measures 14 key blood parameters: WBC (total white blood cell count), RBC (red blood cell count), Hemoglobin (oxygen-carrying protein), Hematocrit (percentage of blood volume from red cells), MCV (average red cell size), MCH (hemoglobin per red cell), MCHC (hemoglobin concentration), RDW (red cell size variation), Platelets (clotting cells), plus the five white cell types: Neutrophils, Lymphocytes, Monocytes, Eosinophils, and Basophils.
Who Should Consider This Test
Anyone seeking a general health assessment, people experiencing fatigue, weakness, or unexplained bruising, those with suspected infections or immune issues, individuals with a family history of blood disorders, and anyone starting a new health baseline.
Health Insights
Conditions Screened
Related Symptoms
When to Get Tested
No fasting is required. This test can be taken at any time of day. It is commonly ordered as part of an annual physical, when symptoms suggest a blood disorder, before surgery, or to monitor ongoing conditions.
Understanding Your Results
Results show counts and percentages for each cell type compared to reference ranges. Low red cells or hemoglobin may indicate anemia, while high white cells often suggest infection or inflammation. The differential helps pinpoint whether an immune response is bacterial, viral, allergic, or parasitic in nature.
What to Expect
After placing your order, you'll receive an email from Rupa Health (our lab order partner) within 24 business hours to sign a consent form and schedule your blood draw at a Quest Diagnostics location.
The blood draw typically takes just a few minutes. Results are usually available within 1 business days and will appear in your secure Justlabs dashboard.
Our results include reference ranges and easy-to-understand indicators showing whether your values are within normal limits.
Frequently Asked Questions
$6
Typical hospital cash price: $120–$200
+ $28 in standard lab & physician fees at checkout (no additional bills later)
$18 lab collection + $10 physician order
Need Help Choosing?
Not sure if this is the right test for you? Take our quick questionnaire.
Take the QuizRelated Tests
CMP
Comprehensive Metabolic Panel
$9.5
Measures 14 substances including glucose, electrolytes, kidney and liver function markers.
Biomarkers:
Glucose, BUN, Creatinine +13 more
Ferritin
Ferritin
$9
Measures iron storage protein. Best indicator of total body iron stores.
Biomarkers:
Ferritin
B12
Vitamin B12
$8
Measures B12 levels essential for nerve function, DNA synthesis, and red blood cell formation.
Biomarkers:
Vitamin B12
$6
+ $28 in fees