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Mean Corpuscular Volume (MCV) with Blood Cell Count

Published: August 9, 2026Updated: August 16, 2026

This test measures the average size of red blood cells (RBCs) and includes a complete blood count (CBC) to assess overall blood health.

Quick summary

["MCV helps diagnose anemia and identify potential causes like vitamin deficiencies or chronic conditions."]

Medically reviewed by WellAlly Editorial TeamLast reviewed August 16, 2026Editorial policy

Key facts at a glance

LOINC
47282-9
Short code
MCV BldCo
Synonyms
MCV BldCo
Category
chemistry
Sample
whole-blood
Container
Lavender-top (EDTA)
Units
N/A
Ref low
80
Ref high
100
Fasting
false
Population
adult
Sex
all
Age range
18–65 years
Specimen volume
3 mL
Stability
Room temperature: 4h, Refrigerated: 24h
Hemolysis max
0
Lipemia max
0
Icterus max
0
TAT
4–24 hours
Order
routine

What Is a Complete Blood Count (CBC)?

A CBC provides a snapshot of your blood’s cellular components, including red blood cells (RBCs), white blood cells (WBCs), and platelets. It helps detect infections, anemia, bleeding disorders, or other blood-related issues.

Why Does MCV Matter?

MCV helps determine whether anemia is due to small, large, or normal-sized RBCs. Low MCV may suggest iron deficiency, while high MCV could point to conditions like alcohol use or vitamin B12 deficiency.

How Is This Test Done?

A small blood sample is drawn from your arm. The lab analyzes it to measure RBC size (MCV) and counts other blood cells.

Common Reasons for Testing

Your doctor may order this test if you have symptoms like fatigue, pale skin, or unexplained weakness, or if they suspect anemia, vitamin deficiencies, or other blood disorders.

Reference range

Adult: 80-100 fLN/A

Specimen: whole-blood

No special preparation usually required. Stay well hydrated. Inform your healthcare provider of all medications and supplements you are taking.

Clinical interpretation

How abnormal results are interpreted and what conditions they suggest.

◆Associated findings1

Short name

MCV with CBC

Frequently asked questions

How long does it take to get results?
Results from this test are typically available within 1–3 business days, depending on lab processing times.
What does an abnormal MCV mean?
An abnormal MCV (either too high or too low) may signal underlying health issues like anemia, vitamin deficiencies, or chronic diseases. Your doctor will interpret results alongside other test findings.
Can diet affect MCV results?
Yes, diet plays a role—low iron, vitamin B12, or folate intake can alter MCV levels. Your doctor may recommend dietary changes or supplements if needed.
  1. 1
    MedlinePlus — Laboratory TestsSource
  2. 2
    Lab Tests OnlineSource
  3. 3
    Mayo Clinic — Tests & ProceduresSource

Click any link to access the full source. PubMed Central (PMC) links provide free full-text access.

This information is for educational purposes only and is not a substitute for professional medical advice, diagnosis, or treatment.

Medical Disclaimer

This content is for general informational and educational purposes only and is not a substitute for professional medical advice, diagnosis, or treatment. Always seek the guidance of a qualified healthcare provider with any questions you have about a medical condition, and never disregard professional medical advice or delay seeking it because of something you read here.

If you think you may have a medical emergency, call your local emergency number or go to the nearest emergency department immediately.

Medically reviewed by WellAlly Editorial Team Last reviewed August 16, 2026. · Read our editorial policy