Cytologic Examination of Prostatic Fluid (Fine Needle Aspiration)
This test analyzes cells collected from fluid obtained during a fine-needle aspiration of the prostate gland, often used to evaluate abnormal symptoms or suspicious findings.
["Helps diagnose prostate issues by examining cells from fluid aspirated during a procedure."]
Key facts at a glance
- LOINC
- 31191-0
- Short code
- Cyto Prostate FNA
- Synonyms
- Cyto Prostate 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
- cyto-stain
- 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 This Test Is Done
Your doctor may recommend this test if you have symptoms like persistent urinary issues, pain during urination, or other signs that suggest prostate abnormalities. It can also be used to investigate prostate enlargement, inflammation, or suspected cancer.
Procedure Overview
A needle is inserted into the prostate under imaging guidance to collect fluid. The fluid is then examined under a microscope to identify any abnormal cells, which may indicate conditions like infection, inflammation, or cancer.
What to Expect Before the Test
No special preparation is typically needed, but you may be asked to empty your bladder before the procedure. You might experience mild discomfort during the needle insertion, but it is usually brief.
What to Expect During the Test
You’ll likely lie on your back with your hips slightly elevated. The doctor will use imaging (like ultrasound) to guide the needle into the prostate. You may feel pressure or slight discomfort, but it shouldn’t be painful.
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
Prostate Fluid Cytology
Frequently asked questions
This test can help identify abnormal cells in the prostate fluid, which may suggest conditions such as prostate cancer, infection, or benign prostatic hyperplasia (BPH). Early detection of abnormal cells can guide further treatment options.
How long does it take to get results from this test?
What are the possible risks or side effects of this procedure?
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