Basophilsnfrstemprodmanual
A laboratory test that counts basophils (a type of white blood cell) in stem cell products to ensure quality before transplantation.
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Key facts at a glance
- LOINC
- 95213-5
- Short code
- BASOLC
- Synonyms
- Basophils NFr Stem prod Manual
- Category
- chemistry
- Sample
- serum
- Container
- Sterile stem cell product bag (e.g., ACD-A or heparin anticoagulant collection bag); EDTA or heparin anticoagulant tube for aliquots
- Units
- N/A
- Ref low
- 0
- Ref high
- 2
- Fasting
- false
- Population
- adult
- Sex
- all
- Age range
- 0–99 years
- Method
- manual-count
- CPT
- 85009
- SNOMED
- 1217002005
- Specimen volume
- 1-2 mL aliquot from stem cell product bag; minimum 0.5 mL for manual count
- Stability
- Specimen should be processed within 24 hours of collection when stored at room temperature (20-25°C). For delays beyond 24 hours, refrigerate at 2-8°C and analyze within 48 hours. Do not freeze.
- Hemolysis max
- 500
- Lipemia max
- 1000
- Icterus max
- 500
- TAT
- 1–4 hours
- Order
- routine
What is this test?
This test counts the number of basophils (a type of white blood cell) in a stem cell product. Basophils are a normal component of blood and stem cell products. The test is performed manually under a microscope by trained laboratory personnel to determine the ratio of basophils to total white blood cells (leukocytes) in the collected stem cells.
Why is this test performed?
This test is performed to assess the quality and composition of stem cell products before they are given to patients. It helps ensure that the stem cell collection contains the appropriate types of cells and is suitable for transplantation. The test provides important information about the cellular makeup of the product, which can affect the success of stem cell transplantation.
How is the test done?
A small sample of the stem cell product is placed on a microscope slide and stained to highlight the cells. A trained technician then examines the sample under a microscope and manually counts the basophils among the total white blood cells. The result is typically expressed as a percentage or ratio.
What do the results mean?
The results show the proportion of basophils in the stem cell product. Your healthcare team will interpret these results along with other tests to determine if the stem cell product is appropriate for transplantation. The presence of basophils is normal, but the exact ratio helps characterize the product's composition.
Reference range
Reference ranges for basophils in stem cell products vary by collection facility and processing protocol. Basophils are typically reported as a percentage of total leukocytes or as an absolute count (cells/μL). Generally, basophils comprise <1-2% of total leukocytes in normal peripheral blood and stem cell products.N/A
No special patient preparation required. Stem cell product is collected via apheresis or bone marrow harvest from the donor/recipient per institutional protocol.
Clinical interpretation
How abnormal results are interpreted and what conditions they suggest.
◆Associated findings1
Frequently asked questions
Is this test painful?
How long does it take to get results?
Do I need to do anything special before this test?
What happens if the results are abnormal?
Sources
- 1
- 2
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.
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