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Absolute count of promyelocytes in peripheral blood (per microliter)

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

This test measures the number of immature white blood cells called promyelocytes in your blood. These cells are part of your body’s immune system and help fight infections.

Quick summary

["Promyelocytes are key in assessing blood cell development and potential blood disorders."]

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

Key facts at a glance

LOINC
30467-5
Short code
Promyelocytes NFr CSF
Synonyms
Promyelocytes NFr CSF
Category
chemistry
Sample
csf
Container
Sterile tube
Units
N/A
Fasting
false
Population
adult
Sex
all
Age range
18–65 years
Specimen volume
1-2 mL
Stability
Immediate analysis required, Refrigerated: 1h
Hemolysis max
200
TAT
4–24 hours
Order
routine

Why This Test Might Be Ordered

Your healthcare provider may recommend this test if you have symptoms like frequent infections, fatigue, or unusual bleeding. It could also be part of a full blood count (CBC) to check for conditions affecting blood cell production, such as leukemia or other blood disorders.

What to Expect Before the Test

No special preparation is needed. You’ll have a small needle inserted into your vein (usually in your arm) to draw a blood sample. The process takes a few minutes, and you may feel a brief pinch. If you’re nervous, let your provider know.

What the Test Results Mean

Results are compared to a standard range for healthy adults. An elevated count may indicate certain blood cancers or infections, while a very low count could suggest bone marrow issues or medications affecting blood cell production.

Common Conditions Affecting Results

High promyelocyte counts might be seen in acute myeloid leukemia (AML) or other myeloproliferative disorders. Low counts could be linked to chemotherapy, radiation therapy, or genetic blood disorders like Fanconi anemia.

Clinical interpretation

How abnormal results are interpreted and what conditions they suggest.

Clinical Significance

Short name

Promyelocyte count

Frequently asked questions

Could I get this test at home?
No, this test requires a blood sample drawn in a clinical setting by a healthcare professional. Home blood tests typically focus on glucose or other analytes.
How often should I get this test?
Frequency depends on your condition. If you have a chronic blood disorder, your provider may order it regularly. For routine health checks, it’s usually not recommended unless symptoms arise.
What does a normal range mean for me?
A normal range means your promyelocyte count falls within typical values for healthy adults. Your specific range may vary slightly based on lab standards, and your provider will discuss results in context with your overall health.
  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