Pouchitis Blood Test

What is Pouchitis?

Pouchitis is inflammation of the ileal pouch, an artificial rectum surgically created for patients with ulcerative colitis who have undergone colectomy. It is caused by bacterial overgrowth, immune dysfunction, and changes in the pouch microbiome that trigger inflammatory responses. The Saccharomyces cerevisiae Antibodies (ASCA) IgG test is the most important blood test for assessing pouchitis risk and monitoring immune patterns in pouch patients.

RECOMMENDED TEST Saccharomyces cerevisiae Antibodies (ASCA) (IgG)
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What causes pouchitis?

Pouchitis is caused by bacterial overgrowth, immune system dysfunction, and alterations in the pouch microbiome following ileal pouch-anal anastomosis (IPAA) surgery. The artificial pouch creates an environment where bacteria can accumulate and trigger inflammation, particularly in patients who previously had ulcerative colitis. Changes in bile acid metabolism, reduced blood flow to the pouch, and genetic predisposition also contribute to the inflammatory response that characterizes pouchitis.

What is the best test for pouchitis?

The Saccharomyces cerevisiae Antibodies (ASCA) IgG test is the most important blood test for pouchitis because it detects antibodies that indicate an increased risk of developing pouch inflammation. Higher ASCA IgG levels have been strongly associated with pouchitis susceptibility in patients with ileal pouches, helping doctors identify who needs closer monitoring. While pouchitis is ultimately diagnosed through endoscopy and clinical symptoms, the ASCA test provides valuable predictive information about your immune patterns and inflammation risk, allowing for earlier intervention and preventive treatment strategies.

When should I get tested for pouchitis?

You should get tested if you have an ileal pouch and experience increased bowel movements, urgency, abdominal cramping, or bleeding. Testing is especially important if you notice a sudden change in your pouch function, persistent pelvic discomfort, or fever and fatigue that might indicate inflammation. Consider ASCA antibody testing soon after pouch surgery to establish your baseline risk profile, or anytime you develop new symptoms that could signal pouch inflammation requiring medical attention.

What are the symptoms of pouchitis?
Pouchitis symptoms include increased stool frequency (often 8-10 times per day), urgent need to use the bathroom, watery or bloody stools, and abdominal cramping. You might also experience pelvic discomfort, nighttime incontinence, fever, joint pain, and general fatigue. Many patients describe symptoms similar to their original ulcerative colitis flare-ups, including a sense that the pouch is not emptying completely and persistent feelings of rectal pressure or discomfort.
Who is at risk for pouchitis?
Patients who have undergone colectomy with ileal pouch-anal anastomosis (IPAA) for ulcerative colitis are at highest risk for pouchitis, with up to 50% developing the condition within 10 years of surgery. Those with elevated ASCA antibodies, a history of extraintestinal manifestations of inflammatory bowel disease, primary sclerosing cholangitis, or extensive colitis before surgery face increased risk. Patients who used NSAIDs or antibiotics frequently, smokers who quit before surgery, and those with certain genetic markers also have higher susceptibility to developing pouch inflammation.
What happens if pouchitis is left untreated?
Untreated pouchitis can progress to chronic inflammation that damages the pouch lining and reduces its function over time. You may develop persistent symptoms that significantly impact quality of life, including chronic diarrhea, bleeding, malnutrition from poor nutrient absorption, and dehydration. Severe cases can lead to pouch failure requiring additional surgery, fistula formation, abscess development, or the need for a permanent ileostomy. Early detection and treatment are essential to preserve pouch function and prevent irreversible damage.
Can pouchitis be diagnosed with a blood test?
Pouchitis cannot be diagnosed with blood tests alone, but blood work plays an important supportive role in risk assessment and monitoring. The ASCA IgG antibody test helps identify patients at higher risk for developing pouchitis and can guide preventive strategies. Definitive diagnosis requires pouchoscopy (endoscopic examination of the pouch) combined with clinical symptoms, but blood tests provide valuable information about inflammatory markers and immune patterns that complement the diagnostic process and help monitor disease activity over time.
How is pouchitis treated?
Pouchitis is primarily treated with antibiotics, most commonly metronidazole or ciprofloxacin, which typically resolve symptoms within days to weeks. For chronic or recurring pouchitis, doctors may prescribe probiotics (particularly VSL#3), anti-inflammatory medications like mesalamine suppositories, or rotating antibiotic regimens. Some patients benefit from immunosuppressive drugs such as corticosteroids, biologics like infliximab, or dietary modifications. Treatment is tailored to whether you have acute, chronic, or antibiotic-dependent pouchitis, with the goal of controlling inflammation and restoring normal pouch function.
How can I prevent pouchitis?
Preventing pouchitis involves maintaining good pouch hygiene, staying well-hydrated, and following a balanced diet that avoids foods triggering inflammation or excessive gas. Some studies suggest that probiotic supplementation, particularly with VSL#3, may reduce pouchitis risk in susceptible patients. Avoid NSAIDs like ibuprofen when possible, as they can irritate the pouch lining, and work closely with your gastroenterologist for regular monitoring and early intervention. Managing stress, getting adequate sleep, and maintaining a healthy lifestyle also support optimal pouch function and immune health.
What can I do at home for pouchitis symptoms?
At home, focus on staying hydrated by drinking plenty of water and electrolyte solutions to replace fluids lost through frequent stools. Eat smaller, more frequent meals with easily digestible foods like bananas, rice, applesauce, and toast while avoiding high-fiber, spicy, or fatty foods that may worsen symptoms. Apply a warm compress to your abdomen for cramping relief, use barrier creams to protect irritated skin around the stoma area, and get adequate rest to support your immune system. However, persistent symptoms require medical evaluation and treatment, so contact your doctor if home measures do not provide relief within a day or two.
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Saccharomyces cerevisiae Antibodies (ASCA) (IgG)
Google reviews 505 reviews
$246 $192
What's included
Fast & easy, results by email & SMS
No need to visit a doctor
Private & confidential
No insurance needed
Results explained
No extra fees paid at the lab

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