Procollagen III Peptide
A specialist P3NP blood test measuring Procollagen Type III peptide, a collagen-turnover marker used in selected fibrosis and monitoring pathways.
Turnaround time
5 business days
Biomarkers count
1
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Overview of the Procollagen III Peptide Test
The Procollagen III Peptide test is a specialist blood test measuring a circulating marker associated with Type III collagen formation and tissue turnover.
The marker is commonly referred to as P3NP or PIIINP.
Type III collagen forms part of the structural framework of several tissues.
When collagen is being produced and remodelled, fragments associated with procollagen processing can enter the bloodstream.
P3NP can therefore provide information about collagen turnover.
The test has been used in selected clinical pathways involving liver fibrosis assessment and monitoring of people receiving certain long-term treatments.
However, P3NP is not specific to the liver.
Concentrations can also be influenced by processes involving other tissues, which means the result should not be interpreted as a standalone diagnosis of liver fibrosis.
Liver enzymes, metabolic risk factors, medication, alcohol use, imaging and other fibrosis assessments may all be relevant.
The Procollagen III Peptide test costs £229.99 and results are generally expected within approximately five working days.
What Does the Procollagen III Peptide Test Check?
This test measures 1 specialist collagen-turnover biomarker.
Procollagen III Peptide
Measures a circulating peptide associated with Type III collagen formation and turnover, providing specialist information used in selected fibrosis and treatment-monitoring pathways.
Who May Benefit From the Procollagen III Peptide Test?
P3NP is generally most useful when requested as part of a defined clinical monitoring or fibrosis-assessment pathway.
People whose clinician has specifically requested P3NP testing - The marker is most useful when there is a clear clinical reason for measurement.
People undergoing selected long-term medication monitoring - P3NP may be used in some specialist pathways assessing possible hepatic fibrosis risk.
People with known liver disease undergoing specialist assessment - The result can provide additional collagen-turnover information.
People with persistently abnormal liver investigations - A clinician may request further fibrosis-related testing.
People with metabolic risk factors and suspected liver fibrosis - Specialist fibrosis assessment may be appropriate depending on the wider clinical picture.
People requiring repeat P3NP monitoring - Serial results may be useful when the same clinical pathway is followed over time.
How to Prepare
Do not stop methotrexate or any other prescribed medicine because of a P3NP test without advice from the prescribing clinician.
The significance of a result depends on why testing was requested and the monitoring protocol being followed.
Symptoms and Reasons to Consider the Procollagen III Peptide Test
P3NP is not usually ordered because of one specific symptom.
Persistently abnormal liver blood tests - Further assessment may be considered depending on the pattern and clinical history.
Known fatty liver disease with fibrosis concerns - Additional fibrosis-related investigations may be recommended.
Long-term treatment requiring specialist liver monitoring - P3NP may form part of selected monitoring protocols.
Previous abnormal P3NP results - Repeat testing may be required according to the treating clinician's protocol.
A clinician has recommended fibrosis-related assessment - P3NP can contribute to the wider investigation.
Liver fibrosis can be present without obvious symptoms.
Conversely, a raised P3NP result does not prove that liver fibrosis is present because the marker reflects collagen turnover rather than one specific disease.
How to Book Your Procollagen III Peptide Test
The Procollagen III Peptide test can be booked privately as a specialist venous blood test.
Choose the Procollagen III Peptide Test
Select the £229.99 P3NP blood test.
Select your sample collection option
Choose an available clinic appointment or suitable professional home blood collection.
Attend your appointment
A trained healthcare professional collects the required venous blood specimen.
Laboratory analysis
Procollagen III Peptide is measured using the specialist laboratory assay.
Receive your results securely
Your authorised P3NP result is delivered securely.
When Will I Receive My Results?
Results are generally expected within approximately 5 working days after laboratory receipt.
Specialist repeat analysis can occasionally extend the reporting timeframe.
Understanding Your Results
A P3NP result should be interpreted using the reference interval and clinical pathway appropriate to the analysing laboratory.
A raised concentration indicates increased Type III collagen turnover.
It does not identify where that collagen turnover is occurring and does not independently diagnose liver fibrosis.
When P3NP is being used for liver assessment, clinicians may interpret it alongside ALT, AST, GGT and other liver blood tests, medication history, metabolic risk factors and imaging.
Depending on the circumstances, further investigation may include FibroScan, ultrasound, another validated fibrosis assessment or hepatology review.
A normal P3NP result also does not independently exclude every form of liver disease or fibrosis.
Why Book With London Blood Tests?
London Blood Tests provides private access to this specialist collagen-turnover marker for appropriate fibrosis and monitoring pathways.
Specialist P3NP measurement - Procollagen III Peptide is measured directly.
Relevant to collagen turnover - The test provides information distinct from routine liver enzymes.
Useful in selected fibrosis pathways - P3NP may complement wider liver assessment where clinically appropriate.
Suitable for repeat monitoring - Serial testing can be arranged according to a clinician-led protocol.
Can complement Liver Function Tests - Routine liver markers and P3NP provide different types of information.
Professional blood collection - Clinic and suitable home appointments are available.
Approximately 5-working-day turnaround - A defined specialist reporting timeframe is provided.
Clear pricing - The Procollagen III Peptide test costs £229.99.
Private Procollagen III Peptide Blood Test in London
London Blood Tests provides private Procollagen III Peptide, also known as P3NP or PIIINP, testing for £229.99.
The test measures one specialist marker associated with Type III collagen turnover.
Results are generally expected within approximately five working days.