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Monocyte Protein Level (Manual Qualitative Analysis)

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

This test checks the presence or absence of protein in your monocytes, a type of white blood cell. It may be used to assess immune function or monitor certain blood disorders.

Quick summary

["This test helps evaluate how your immune system’s cells (monocytes) behave in terms of protein content."]

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

Key facts at a glance

LOINC
68421-7
Short code
Monocytes # Prt Manual
Synonyms
Monocytes # Prt Manual
Category
chemistry
Sample
serum
Container
Red-top tube (SST)
Units
N/A
Fasting
false
Population
adult
Sex
all
Age range
18–65 years
Method
manual-count
Specimen volume
5 mL
Stability
Room temperature: 4h, Refrigerated: 24h, Frozen: 7d
Hemolysis max
500
Lipemia max
1000
Icterus max
500
TAT
4–24 hours
Order
routine

What Is a Monocyte Protein Test Used For?

Doctors may order this test if they suspect conditions like chronic inflammation, certain infections, or immune system abnormalities. It can also help monitor treatment responses in patients with blood disorders or immune-related diseases.

How Is the Test Performed?

A small blood sample is drawn from your arm. The sample is then analyzed manually to detect protein presence in your monocytes. This process does not involve automated machines or specific reagents like those in other tests.

What Does the Test Result Mean?

Results are qualitative (present or absent) rather than numerical. If protein is detected, it may indicate normal or slightly altered monocyte activity. If protein is not detected, it could suggest immune dysfunction or other underlying issues that require further evaluation.

How Is This Test Different from Other Blood Tests?

Unlike standard blood tests (e.g., CBC or CRP), this test focuses specifically on protein content in monocytes. It’s less common and typically reserved for specialized diagnostic or research purposes.

Clinical interpretation

How abnormal results are interpreted and what conditions they suggest.

◆Associated findings1

Short name

Monocyte Protein Test

Frequently asked questions

Why would my doctor request this test?
Your doctor may recommend it if you have symptoms like persistent fatigue, unexplained infections, or signs of chronic inflammation. It could also be part of a detailed blood analysis for conditions like autoimmune diseases or inherited disorders affecting white blood cells.
What are the typical preparation steps for this test?
No special preparation is needed. You may eat or drink normally before the test, but avoid heavy exercise or medications that could affect blood composition for 24 hours before your appointment.
Are there any risks or side effects associated with this test?
The most common side effect is mild bruising or soreness at the needle insertion site. Rarely, there may be a slight reaction to the blood draw, such as dizziness or swelling. Most side effects are minor and resolve quickly.
  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