C-reactive protein (CRP) by high-performance liquid chromatography (HPLC)
This test measures the level of C-reactive protein in your blood, a marker often used to check for inflammation or infection.
["CRP helps doctors monitor inflammation and assess risk for conditions like heart disease or autoimmune disorders."]
Key facts at a glance
- LOINC
- 99631-4
- Short code
- CBCT-TMJ-BIL
- Synonyms
- CBCT TMJ-Bl
- Category
- chemistry
- Sample
- serum
- Container
- Not applicable - imaging study performed on patient using CBCT scanner; no specimen container required
- Units
- N/A
- Fasting
- false
- Population
- adult
- Sex
- all
- Age range
- ≥ 6 years
- Method
- ct-cone-beam
- CPT
- 70486
- SNOMED
- 169068008
- Specimen volume
- Not applicable - imaging study does not require a specimen
- Stability
- Not applicable - imaging study does not require specimen handling or stability considerations
- Hemolysis max
- 500
- Lipemia max
- 1000
- Icterus max
- 500
- TAT
- 4–24 hours
- Order
- routine
Why CRP is Tested
Doctors may order a CRP test to evaluate signs of inflammation in your body, which can occur with infections, injuries, or certain diseases. It’s also used to monitor conditions like rheumatoid arthritis, lupus, or heart disease over time.
How the Test Works
A small blood sample is taken from your arm. The blood is processed to separate the CRP protein from other components. High-performance liquid chromatography (HPLC) then measures the amount of CRP present, providing a precise reading.
What to Expect Before the Test
There are no special preparations needed for this test. You can eat, drink, or take medications as usual. If you’re on blood thinners, let your doctor know before the test.
What to Expect During the Test
You’ll lie down on a table while a nurse inserts a needle into your arm to draw a small amount of blood. The process usually takes a few minutes, and you may feel a slight pinch. The blood is then sent to a lab for analysis.
Reference range
No reference range applies. Imaging study interpreted by radiologist for structural findings including condylar morphology, glenoid fossa, articular eminence, joint space, and bony pathology of bilateral TMJs.N/A
No special preparation required. Patient should remove all metal objects including earrings, hair clips, dentures, and removable dental appliances from the head and neck region prior to imaging. Inform technologist if pregnant. Remain still during scan acquisition.
Clinical interpretation
How abnormal results are interpreted and what conditions they suggest.
◆Associated findings1
Short name
CRP (High-Performance Liquid Chromatography)
Frequently asked questions
When might I need this test?
What do my results mean?
Can lifestyle changes affect CRP levels?
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