Fat differential, feces, quantitative
CPT4 code
Name of the Procedure:
Fat Differential, Feces, Quantitative (also known as Stool Fat Analysis or Fecal Fat Test)
Summary
The Fat Differential, Feces, Quantitative test measures the amount of fat in a stool sample to help diagnose issues with fat absorption in the digestive system.
Purpose
This procedure is used to evaluate how well your body is digesting and absorbing fats. It helps in diagnosing conditions like malabsorption syndromes, chronic pancreatitis, cystic fibrosis, and other disorders affecting the digestive tract.
Indications
- Chronic diarrhea
- Unexplained weight loss
- Symptoms of malnutrition
- Steatorrhea (fatty stools)
Preparation
- You may be advised to eat a diet high in fat (about 100 grams per day) for 2-3 days before the test.
- Some medications may need to be paused, as instructed by your healthcare provider.
- Collect stool samples over a 72-hour period as directed.
Procedure Description
- The patient collects stool samples over a specified period, typically 72 hours.
- The samples are properly stored and sent to the laboratory for analysis.
- Laboratory technicians measure the fat content in the stool samples using various chemical methods.
Duration
The collection period for stool samples usually lasts 72 hours. Laboratory analysis may take a few additional days after the sample is submitted.
Setting
This is a home-based procedure for stool collection, but the analysis is conducted in a clinical laboratory.
Personnel
- Primary care physician or gastroenterologist for test requisition
- Laboratory technicians for analyzing stool samples
Risks and Complications
- No physical risks or complications from the procedure itself.
- Improper collection or contamination of samples can lead to inaccurate results, necessitating a repeat of the procedure.
Benefits
- Helps in diagnosing and tailoring treatments for malabsorption conditions.
- Can lead to significant improvements in symptoms and overall quality of life when correct diagnosis and treatment are applied.
Recovery
- There is no recovery period, as this is a non-invasive test.
- Follow normal diet and activities unless otherwise instructed.
Alternatives
- Blood tests for deficiencies (e.g., vitamins A, D, E, and K) can indirectly indicate malabsorption.
- Imaging studies like CT scans to look for structural abnormalities in the digestive tract.
- Breath tests to detect carbohydrate malabsorption.
Patient Experience
- Patients may find the collection of stool samples inconvenient and uncomfortable.
- There is no pain involved.
- Detailed instructions from healthcare providers make the process easier to manage.