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CD14-Positive Blast Cells — Number Fraction, Specimen

Published: August 9, 2026Updated: August 17, 2026

Measures the proportion of blast cells that carry the CD14 marker in a submitted specimen, usually as part of a flow-cytometric leukocyte analysis.

Quick summary

["This test helps determine whether abnormal blast cells express CD14, which can help classify certain blood cancers."]

Medically reviewed by WellAlly Editorial TeamLast reviewed August 17, 2026Editorial policy

Key facts at a glance

LOINC
51076-8
Short code
CD14 Blasts/Blasts NFr Spec
Synonyms
CD14 Blasts/Blasts NFr Spec
Category
liver
Sample
serum
Container
Red-top tube (SST)
Units
N/A
Ref low
10
Ref high
40
Critical range
— – 500 N/A
Fasting
false
Population
adult
Sex
all
Age range
18–65 years
CPT
84484
SNOMED
302774002
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 this test?

This test measures the fraction of blast cells that express CD14, a protein found on some immune cells. Blasts are immature blood cells and are normally present only in small numbers in blood and bone marrow.

Why might I need this test?

It may be ordered when blood counts, a blood smear, or another test suggests an unusual number of immature cells. CD14 testing can help classify a blood disorder or blood cancer when abnormal blasts are present.

How is the test performed?

A laboratory specialist examines cells from the submitted specimen, most often using flow cytometry, to determine whether the blasts carry the CD14 marker. The result is reported as a proportion of the blast cells tested.

How do I prepare for the test?

Preparation depends on the specimen used. For blood or bone marrow testing, follow the laboratory's collection instructions, and tell the clinician if you have a bleeding disorder, a bone marrow disorder, or a recent blood transfusion.

Reference range

Adult: 10-40 U/LN/A

Specimen: serum

No special preparation required. Avoid fatty meals before the test if possible.

Clinical interpretation

How abnormal results are interpreted and what conditions they suggest.

◆Associated findings1

Short name

CD14-positive blasts

Frequently asked questions

Does a positive result mean I have cancer?
Not by itself. CD14-positive blasts can be found in the evaluation of several conditions, so a hematologist must interpret the result with the rest of the laboratory workup.
What is the difference between blasts and other blood cells?
Blasts are immature blood cells that have not yet fully matured. A small blast percentage may be normal, while an increase can prompt further testing.
Is this the same as a complete blood count?
No. A complete blood count measures the number and size of blood cells, while this test determines whether abnormal blasts carry the CD14 marker.
  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 17, 2026. · Read our editorial policy