--- title: Monocytes Test type: biomarker url: "https://www.test-well.com/biomarkers/monocytes" also_known_as: - monocytes - monocytes % - monocyte category: Blood Health units: - "%" order_price_usd: 21.99 order_item: CBC with Differential order_url: "https://www.test-well.com/tests/cbc-with-differential" reviewed_at: 2026-09-06 --- # Monocytes > Monocytes is measured with a standard blood draw; no fasting is needed. A typical reference range is 2.00 – 8.00 %. At TestWell it's $21.99 all-in as CBC with Differential, results in 1–3 business days, drawn at Quest or Labcorp. An out-of-range result is a prompt to look closer, not a diagnosis. Also known as: monocytes, monocytes %, monocyte. ## Key facts | Fact | Value | | --- | --- | | Units | % | | Sample | Blood draw | | Fasting | Not required | | Results | 1–3 business days | | Price | $21.99 | | Labs | Quest or Labcorp · BioReference in NY/NJ | ## What does Monocytes measure? White blood cells that mature into macrophages and clean up debris and pathogens. ## What is the normal range for Monocytes? | Population | Reference range | | --- | --- | | age 18+ | 2.00 – 8.00 % | Reference intervals differ slightly between labs; the range printed on your report is the one to interpret against. Ranges are usually set so 95% of healthy people fall inside them. ## What does a high Monocytes mean? A high monocyte count (monocytosis) reflects chronic inflammation or the recovery phase of an infection — tuberculosis, endocarditis, autoimmune disease, inflammatory bowel disease and recovery from neutropenia all raise it. Persistent unexplained monocytosis, especially with other abnormal counts, is evaluated for myelodysplastic or chronic myelomonocytic disorders. ### Common causes of high Monocytes 1. Chronic infections: tuberculosis, endocarditis, brucellosis, syphilis 2. Autoimmune and inflammatory disease, inflammatory bowel disease, sarcoidosis 3. Recovery from acute infection or chemotherapy 4. Smoking, chronic stress 5. Chronic myelomonocytic leukemia, myelodysplasia, lymphoma (rare; persistent) ### Symptoms that go with high Monocytes - Usually none - Fever, fatigue, weight loss with a chronic infection or inflammatory disease ### What clinicians usually check next - Repeat CBC with differential in 4–6 weeks - CRP/ESR; targeted infection or autoimmune tests - Peripheral smear and hematology review if persistent Follow-up tests at TestWell: [CBC (Complete Blood Count)](https://www.test-well.com/tests/cbc) ($21.99), [Body Inflammation Test (ESR)](https://www.test-well.com/tests/sed-rate) ($18.99), [C-Reactive Protein (CRP)](https://www.test-well.com/tests/crp) ($26.99), [Sed Rate (ESR)](https://www.test-well.com/tests/sed-rate-esr) ($24.99). **What monocyte level is too high?** Above about 0.8–1.0 × 10³/µL absolute (roughly over 8–10%). One mildly high value after an infection is expected; the same value three months later is what gets investigated. ## How do you get tested for Monocytes? | Order | Type | Price | Includes | | --- | --- | --- | --- | | [CBC with Differential](https://www.test-well.com/tests/cbc-with-differential) | Single test | $21.99 | This marker | | [General Wellness Panel](https://www.test-well.com/tests/general-wellness-panel) | Panel | $49.99 | 4 tests | | [Baseline Anemia Panel](https://www.test-well.com/tests/anemia-panel) | Panel | $74.99 | 5 tests | | [Fatty Liver Panel](https://www.test-well.com/tests/fatty-liver-panel) | Panel | $92.99 | 6 tests | | [Post-COVID Recovery Panel](https://www.test-well.com/tests/post-covid-panel) | Panel | $99.99 | 7 tests | ## Quest vs Labcorp vs BioReference | Lab | Available | Price | Notes | | --- | --- | --- | --- | | Quest Diagnostics | Yes | $21.99 | Choose Quest at checkout; walk-in patient service centers in every state TestWell serves outside NY and NJ. | | Labcorp | Yes | $21.99 | Choose Labcorp at checkout; walk-in patient service centers in every state TestWell serves outside NY and NJ. | | BioReference (NY & NJ) | Yes | $18.99 | New York and New Jersey orders route here automatically — state rules keep Quest and Labcorp from accepting self-ordered draws. | ## Common questions about Monocytes ### Do I need a doctor's order to test my monocytes? No. TestWell's licensed physician network reviews and approves your order — usually within minutes. You can place an order online without an in-person visit or a referral from your own doctor. ### How long does it take to get Monocytes results? Most Monocytes results are available in 1–3 business days after your specimen arrives at the lab. You'll get an email the moment your results are ready, with everything viewable in your TestWell portal. ### How much does a Monocytes test cost? Our CBC with Differential starts at $21.99. That's the all-in price — no copays, no insurance hoops, no surprise bills. HSA and FSA cards are accepted. ### Do I need to fast before my Monocytes test? Fasting is not required for the Monocytes test. You can have your blood drawn any time of day. ### Which lab will process my Monocytes test? Your test will be processed by Quest Diagnostics, Labcorp, or BioReference depending on which is closest to you and which lab carries the test. All three are CLIA-certified and trusted by hospitals nationwide. You'll choose your lab during checkout from 4,000+ locations. ## Sources - [AACC Lab Tests Online](https://www.testing.com/tests/wbc-differential/) - [MedlinePlus (NIH) — Blood Differential](https://medlineplus.gov/lab-tests/blood-differential/) ## Related biomarkers - [Hemoglobin](https://www.test-well.com/biomarkers/hemoglobin) - [Hematocrit](https://www.test-well.com/biomarkers/hematocrit) - [White Blood Cell Count](https://www.test-well.com/biomarkers/white-blood-cell-count) - [Platelet Count](https://www.test-well.com/biomarkers/platelet-count) - [Red Blood Cell Count](https://www.test-well.com/biomarkers/red-blood-cell-count) - [MCV](https://www.test-well.com/biomarkers/mcv) - [Reference range lookup tool](https://www.test-well.com/tools/reference-range-lookup) - [Lab unit converter](https://www.test-well.com/tools/lab-unit-converter) - [All biomarkers](https://www.test-well.com/biomarkers) --- Medically reviewed by Youmna DiStefano, MD (Medical Reviewer, TestWell); last reviewed 2026-09-06. Review policy: https://www.test-well.com/reviewers/youmna-distefano-md Canonical page: https://www.test-well.com/biomarkers/monocytes Machine-readable catalog: https://www.test-well.com/api/catalog.json · MCP server: https://www.test-well.com/mcp · Overview for agents: https://www.test-well.com/llms.txt Prices are cash-pay, in USD, and include physician authorization; every order adds one flat $6 lab processing fee. Educational content is not a diagnosis — discuss results with a clinician.