Clotting; factor X (Stuart-Prower)
CPT4 code
Name of the Procedure:
Clotting; Factor X Assay (Stuart-Prower Factor Test)
Summary
The Factor X Assay is a blood test used to measure the activity of Factor X, a protein that plays a critical role in the blood clotting process. This test helps diagnose bleeding disorders and monitor patients with conditions that affect clotting.
Purpose
The test addresses issues related to abnormal blood clotting. Its primary goal is to determine whether a patient has a deficiency of Factor X, which can lead to excessive bleeding. It also helps monitor the effectiveness of treatments for clotting disorders.
Indications
- Unexplained excessive bleeding or bruising
- Frequent nosebleeds
- Heavy menstrual periods
- Family history of bleeding disorders
- Monitoring treatment for clotting disorders like hemophilia
Preparation
- No fasting is required.
- Avoid medications that affect clotting (e.g., aspirin, warfarin) as advised by your healthcare provider.
- Inform your doctor about all medications and supplements you are taking.
Procedure Description
- Blood Draw: A healthcare provider will clean an area of your skin, usually on your arm, and insert a needle to draw a blood sample.
- Laboratory Analysis: The blood sample is sent to a lab where the activity of Factor X is measured using specific reagents and techniques.
- Results: The results are typically analyzed by a hematologist who will interpret the findings.
Duration
The blood draw takes about 5-10 minutes. Laboratory results are usually available within a few days to a week.
Setting
The blood sample is typically drawn in a hospital, outpatient clinic, or laboratory setting.
Personnel
- Phlebotomist or nurse to draw the blood
- Laboratory technicians to analyze the sample
- Hematologist to interpret results
Risks and Complications
- Common: Mild pain or bruising at the needle site
- Rare: Infection, excessive bleeding at the needle site
Benefits
- Accurate diagnosis of bleeding disorders
- Development of an effective treatment plan
- Monitoring of therapy effectiveness
Recovery
- Mild discomfort at the blood draw site, which typically resolves quickly
- No significant recovery time required
- Follow up with healthcare provider for results and further management
Alternatives
- Other clotting factor assays (Factor VIII or IX tests)
- Genetic testing to identify specific bleeding disorders
- Imaging studies for related complications
Pros and cons of alternatives depend on the specific condition being investigated and patient history.
Patient Experience
- Slight pinch or discomfort during blood draw
- Minimal downtime post-procedure
- Results discussions may involve further testing or treatments based on findings
Pain management for the needle insertion is usually not necessary, but some patients might find it helpful to apply a cold pack to the site if bruising occurs.