Serum or Plasma Substance Concentration (Electrochemiluminescence Immunoassay)
This test measures the level of a particular protein in your blood, using a sensitive electrochemical detection method. It helps assess conditions related to protein function, immune response, or metabolic processes.
["This test helps diagnose or monitor conditions affecting protein levels in your blood."]
Key facts at a glance
- LOINC
- 6569-8
- Short code
- VZV IgG Titr Ser IF
- Synonyms
- VZV IgG Titr Ser IF
- Category
- chemistry
- Sample
- serum
- Container
- Red-top tube (SST)
- Units
- N/A
- Ref low
- 8
- Ref high
- 61
- Fasting
- false
- Population
- adult
- Sex
- all
- Age range
- 18–65 years
- Method
- if
- CPT
- 82977
- SNOMED
- 3110003
- 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 healthcare provider may order this test to evaluate symptoms such as unexplained fatigue, organ dysfunction, or signs of an underlying medical condition. It can also be used to monitor treatment progress or check for changes in protein levels over time. Common reasons include investigating autoimmune disorders, kidney disease, liver issues, or genetic conditions affecting protein metabolism.
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 a specific timing (e.g., 24-hour collection). Avoid smoking or consuming certain medications for a set period before testing. Bring any medications you’re currently taking to your appointment.
During the Test
A healthcare professional will draw blood from a vein in your arm. You may feel a slight pinch or discomfort, but it usually lasts only a few seconds. The process takes about 5 minutes. If you’re nervous, let your provider know—they can offer ways to stay calm.
After the Test
You can return to your normal activities immediately. Apply gentle pressure to the site to stop any bleeding, and check the area for signs of infection (e.g., redness, swelling). Avoid heavy lifting or strenuous activity for a short time. Call your provider if you experience excessive pain, swelling, or signs of infection.
Reference range
Adult males: 8-61 U/L; Adult females: 5-36 U/LN/A
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
Electrochemiluminescence Immunoassay (ECLIA) for a Specific Protein
Frequently asked questions
This test helps identify abnormal protein levels that may indicate conditions like chronic kidney disease, liver disease, or autoimmune disorders. Elevated or low levels can signal problems with protein synthesis, breakdown, or transport in the body. For example, certain proteins are linked to immune function, muscle health, or fluid balance. Early detection can guide treatment decisions.
A result outside the expected range may not have a straightforward interpretation. Your provider will review your results alongside your medical history, symptoms, and other tests to determine if further action is needed. Some proteins have specific roles, so abnormal levels could point to conditions like protein-losing syndromes, infections, or genetic disorders.
Most likely, no fasting is required unless specified by your provider. If the test involves a 24-hour urine collection or other specific instructions, follow those carefully. Always confirm with your healthcare team before making changes to your diet or medications.
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