Fine Needle Aspiration Cytology of the Spleen (Guided)
This test involves a small sample of cells taken from your spleen using a fine needle, guided by imaging (such as ultrasound or CT scan), to examine them under a microscope. It helps diagnose conditions like infections, tumors, or other abnormalities.
["A guided fine needle aspiration helps doctors analyze spleen tissue for potential health concerns with precision."]
Key facts at a glance
- LOINC
- 30610-0
- Short code
- CT Guided Spleen FNA
- Synonyms
- CT Guided Spleen FNA
- Category
- chemistry
- Sample
- serum
- Container
- Red-top tube (SST)
- Units
- N/A
- Ref low
- 136
- Ref high
- 145
- Critical range
- 120 N/A – 160 N/A
- Fasting
- false
- Population
- adult
- Sex
- all
- Age range
- 18–65 years
- Method
- ct
- CPT
- 84295
- SNOMED
- 110741000
- 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
Why Is This Test Done?
Your doctor may recommend this test if you have symptoms like unexplained weight loss, fever, night sweats, or swelling in the spleen. It’s also used when there’s suspicion of a mass, lymphoma, or other spleen-related diseases, especially if other tests (like blood work) are inconclusive.
What to Expect Before the Test
You’ll likely receive local anesthesia to numb the area where the needle will be inserted. The procedure is usually quick and done while you’re awake. You may feel some discomfort but shouldn’t experience significant pain. Avoid eating or drinking for a few hours before the test if instructed.
During the Test
A healthcare provider will use imaging (like ultrasound or CT) to guide the needle into your spleen. A small amount of fluid or cells will be collected. The sample is then sent to a lab for microscopic examination to identify any abnormal cells or conditions.
After the Test
You can usually go home immediately after the procedure. Apply gentle pressure to the injection site to control any bleeding. Monitor for signs of infection (like increased pain, redness, or fever) and contact your doctor if you experience severe discomfort or unusual symptoms.
Reference range
Adult: 136-145 mmol/LN/A
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
Spleen FNA
Frequently asked questions
How long will it take to get results from this test?
Is this test painful?
Can I eat or drink before this test?
Sources
- 1
- 2Lab Tests OnlineSource
- 3
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