Serum/plasma mass concentration of a substance detected via immunoassay (e.g., specific protein or antibody)
This test measures the amount of a particular substance in your blood, typically done to check for certain proteins, antibodies, or other molecules.
["This test helps diagnose or monitor conditions related to abnormal levels of specific blood components."]
Key facts at a glance
- LOINC
- 35741-8
- Short code
- PSA SerPl DL<=0.01 ng/mL-mCnc
- Synonyms
- PSA SerPl DL<=0.01 ng/mL-mCnc
- Category
- chemistry
- Sample
- serum
- Container
- Red-top tube (SST)
- Units
- N/A
- Ref low
- 0
- Ref high
- 100
- Fasting
- false
- Population
- adult
- Sex
- all
- Age range
- 18–65 years
- Method
- detection-limit-ng-ml
- CPT
- 83721
- SNOMED
- 113079007
- 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 Might Be Ordered
Your healthcare provider may recommend this test if you have symptoms or risk factors for conditions affecting blood proteins, immune function, or other metabolic processes. It could also be part of routine screening or monitoring for certain diseases.
What to Expect Before the Test
No special preparation is usually needed, but you may be asked to fast for a few hours if the test involves blood drawn after an overnight fast. Avoid smoking or consuming certain medications for a specified period if instructed.
What Happens During the Test
A healthcare professional will draw blood from a vein in your arm. You may feel a slight pinch, but it typically doesn’t cause significant discomfort. The blood sample is then sent to a lab for analysis using an immunoassay method to detect and quantify the substance.
What the Results Mean
Results will show the concentration of the measured substance in your blood. Abnormal results may indicate conditions like infections, autoimmune diseases, protein disorders, or other health issues that require further evaluation by your doctor.
Reference range
Optimal: <100 mg/dLN/A
Fasting for 12-14 hours preferred. Water is permitted. Avoid alcohol for 24 hours before the test.
Clinical interpretation
How abnormal results are interpreted and what conditions they suggest.
Abnormal levels of this substance can signal underlying health problems, such as immune system disorders, metabolic imbalances, or genetic conditions. For example, elevated levels might suggest inflammation, infection, or certain cancers, while low levels could point to deficiencies or dysfunctions in organ systems.
Frequently asked questions
What does a normal result mean?
Can I eat or drink before this test?
How long will it take to get my results?
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