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Category: Digestive System

September 22, 2026

Diabetes After Pancreatitis or Pancreatic Surgery: Understanding Type 3c Diabetes

How glucose, insulin-secretion, autoimmune, and stool tests answer different questions after pancreatic disease or surgery.

Diabetes can develop after pancreatitis or pancreatic surgery because pancreatic disease can affect the cells that make insulin. This is often called pancreatic, pancreatogenic, or type 3c diabetes. Understanding the cause matters because some people […]

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September 20, 2026

Iron Deficiency After Bariatric Surgery: Testing, Absorption, and Follow-Up

Why altered absorption, reduced intake, and continuing blood loss can make lifelong iron monitoring necessary.

After bariatric surgery, iron monitoring should connect the procedure, symptoms, supplement plan, and possible blood loss. Iron deficiency can develop after weight-loss surgery even when the operation achieved its intended benefits. Changes in intake and […]

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September 20, 2026

Type 1 Diabetes and Celiac Disease: When Screening and Follow-Up Testing Matter

People with type 1 diabetes have an increased likelihood of celiac disease, but screening plans differ for children and adults. Celiac disease may be found before digestive symptoms are recognized. It can also become relevant […]

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September 20, 2026

Celiac Disease and Elevated Liver Enzymes: When ALT and AST Need a Broader Evaluation

Interpret ALT, AST, bilirubin, and albumin with celiac risk, and investigate persistent abnormalities without assuming one cause.

Unexplained elevations in ALT and AST can be a reason to consider celiac disease, even without prominent digestive symptoms. These enzymes can rise in untreated celiac disease, but they also rise for many other reasons. […]

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September 20, 2026

Hashimoto’s and Celiac Disease: When Thyroid and Nutrient Results Need a Closer Look

Persistent fatigue, digestive symptoms, or recurring nutrient deficiencies in someone with Hashimoto's thyroiditis may deserve evaluation beyond the thyroid. Hashimoto's and celiac disease are distinct autoimmune conditions that can occur together. Having one does not […]

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September 20, 2026

Celiac Disease and Bone Health: Understanding Vitamin D, Calcium, Phosphorus, and PTH

Read vitamin D, calcium, albumin, phosphorus, and PTH together, and understand why laboratory testing does not replace DXA bone-density measurement.

Selected 25-hydroxyvitamin D, calcium, albumin, phosphorus, and parathyroid hormone (PTH) tests can help clarify the pattern. Ulta Lab Tests provides the linked laboratory options for a plan developed with your healthcare professional. This information is […]

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September 20, 2026

Exocrine Pancreatic Insufficiency: What Stool Elastase and Nutrient Tests Can Reveal

How stool consistency, pancreatic enzyme output, and fat-soluble vitamin results shape a focused malabsorption evaluation.

Exocrine pancreatic insufficiency, or EPI, occurs when too little pancreatic digestive-enzyme activity reaches the intestine to digest food adequately. It can cause greasy stools, unintended weight loss, and nutritional problems. The stool pancreatic elastase-1 test […]

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September 20, 2026

Celiac Disease in the Family: Who Should Be Tested and What Results Mean

Understand testing for parents, siblings, and children, including symptom-free relatives and the limits of genetic results.

Celiac Disease in the Family: Who Should Be Tested? If a parent, sibling, or child has confirmed celiac disease, discuss your own testing even if you feel well. Celiac disease runs in families, but relatives […]

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September 19, 2026

Celiac Disease Testing: Why Test Before Going Gluten-Free

How gluten exposure, antibody results, and selected nutrient and thyroid tests fit into a complete celiac evaluation.

Celiac disease testing is most informative before you stop eating gluten. Celiac disease is an immune-mediated condition in which gluten damages the small intestine in susceptible people. That injury can cause digestive symptoms, but it […]

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September 18, 2026

Adult-Onset Autoimmune Diabetes (LADA): When Type 2 Does Not Fit

How glucose, A1C, islet autoantibodies, C-peptide, and ketones help clarify diabetes type, remaining insulin production, and urgent risk. Adult-onset type 1 diabetes can initially resemble type 2 diabetes. In a slower-progressing presentation often called latent […]

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September 2, 2026

Thriving Without a Gallbladder: A Comprehensive Guide

What to eat, how to return to activity, which symptoms need care, and when laboratory tests or imaging may help after cholecystectomy.

Direct answer: Temporary nausea, bloating, loose stool, or food-related discomfort can occur while the body adjusts after gallbladder removal. Most people can gradually return to a normal, balanced diet and usual activity, guided by food […]

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September 2, 2026

Pancreatitis: Symptoms, Lipase Testing, Imaging, and Urgent Care

How acute pancreatitis is evaluated, why lipase is a targeted test, and how chronic pancreatitis and pancreatic insufficiency differ.

Direct answer: Acute pancreatitis is a potentially serious inflammation of the pancreas that usually requires urgent clinical assessment. Diagnosis generally requires at least two of three findings: characteristic upper-abdominal pain, amylase or lipase at least […]

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September 2, 2026

Lactose Intolerance Testing: Hydrogen Breath Test, Symptoms, and What Results Mean

How lactose malabsorption differs from clinical intolerance, milk allergy, and secondary digestive disease.

Direct answer: The lactose hydrogen breath test is the main objective test used to look for lactose malabsorption. After a measured lactose drink, breath samples are collected over several hours. A meaningful rise in breath […]

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September 2, 2026

Celiac Disease vs Wheat Allergy vs Non-Celiac Gluten Sensitivity: Which Tests

How to match symptoms to the right evaluation—and why no single “gluten intolerance” blood test can answer every question.

Direct answer: Celiac disease, wheat allergy, and non-celiac gluten sensitivity (NCGS) are different conditions. Celiac disease is an autoimmune disorder evaluated with celiac-specific antibodies—usually while the person is still eating gluten—and often confirmed with upper […]

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September 2, 2026

Nutrient Deficiency Symptoms: Fatigue, Brain Fog, Weakness, and Lab Tests

How focused nutrient testing may help investigate persistent symptoms—and why fatigue, brain fog, and weakness can have non-nutrient causes.

Direct answer: Nutrient deficiency symptoms can include fatigue, weakness, poor concentration, numbness or tingling, reduced exercise tolerance, mouth or tongue changes, and muscle symptoms, but none is specific to a deficiency. Focused blood tests for […]

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September 2, 2026

Pancreatic Cancer Symptoms and Testing: What Blood Tests Can—and Cannot Detect

How symptoms, blood tests, imaging, and tissue sampling fit together—and why no blood test can diagnose pancreatic cancer alone.

Direct answer: No routine blood test can reliably screen the general population for pancreatic cancer, diagnose it by itself, or rule it out. Blood tests can reveal jaundice-related bile-flow abnormalities, anemia, metabolic changes, or pancreatic […]

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August 26, 2026

Iron Deficiency Anemia: Why Ferritin, Transferrin Saturation, CBC, and the Source of Iron Loss Must Be Read Together

How to confirm both iron deficiency and anemia, identify blood loss or malabsorption, and document recovery of hemoglobin and iron stores.

Iron deficiency anemia is not simply a low hemoglobin result, a low serum iron result, or a reason to take an iron supplement indefinitely. The diagnosis contains two connected findings: iron deficiency and anemia. The […]

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August 11, 2026

Vitamin and Nutrient Deficiency Tests: Vitamins, Minerals, Iron, and Micronutrients

Understand which nutrient biomarkers may help investigate a specific risk, what each result can and cannot show, and why targeted testing usually beats an indiscriminate panel.

Vitamin and nutrient deficiency tests are blood and, less often, urine tests used to investigate a defined question about low intake, malabsorption, blood loss, medication effects, pregnancy-related risk, a prior abnormal result, or possible supplement […]

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August 11, 2026

Digestive Health Lab Tests: Blood, Stool, Celiac, Inflammation, and Pancreatic Testing

Compare blood, stool, breath, celiac, inflammation, infection, malabsorption, and pancreatic tests—and learn when imaging, endoscopy, or biopsy may still be needed.

Digestive health lab tests use blood, stool, and sometimes breath samples to look for objective clues related to anemia, dehydration, inflammation, infection, celiac disease, nutrient malabsorption, pancreatic enzyme problems, hidden blood in stool, and selected […]

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July 17, 2026

Inflammatory Bowel Disease Testing: Finding Crohn’s and Ulcerative Colitis Clues Beyond Digestive Symptoms

How blood and stool testing can uncover intestinal inflammation, anemia, nutrient deficiencies, and treatment-safety concerns in Crohn’s disease and ulcerative colitis.

Inflammatory bowel disease, or IBD, is a group of chronic inflammatory conditions that includes Crohn’s disease and ulcerative colitis. Although diarrhea, abdominal pain, rectal bleeding, and bowel urgency are well-known warning signs, intestinal inflammation can […]

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July 15, 2026

Rapid Weight Loss, GLP-1 Medications, and “Toxin Release”: What Patients Should Know

What rapid fat loss may—and may not—release, how GLP-1 side effects can affect hydration and nutrition, and which lab tests may support informed monitoring.

Rapid weight loss with medications such as semaglutide and tirzepatide can lead to meaningful changes in body weight, appetite, blood sugar, and cardiometabolic health. Semaglutide is a glucagon-like peptide-1 receptor agonist, commonly called a GLP-1 […]

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July 12, 2026

Assessing Nutrient Absorption in Digestive Disorders with Key Blood Tests

How blood tests reveal iron, vitamin B12, folate, vitamin D, and mineral deficiencies associated with digestive malabsorption.

Digestive symptoms do not always remain limited to the stomach or intestines. When a digestive disorder interferes with the breakdown or absorption of food, the effects may appear throughout the body as fatigue, anemia, brain […]

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July 10, 2026

How Lab Testing Can Help Explain Fatigue, Brain Fog, Poor Recovery, and More

How vitamin, mineral, iron, thyroid, metabolic, digestive, inflammation, hormone, and recovery labs can reveal connected health patterns

Nutrient deficiency means the body may not have enough of one or more vitamins, minerals, or related nutrients needed to support normal function. Because nutrients help support blood health, energy production, nerve function, immune balance, […]

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July 8, 2026

Digestive Symptoms and Whole-Body Health: Lab Tests That Help Connect Gut, Nutrient, Thyroid, and Inflammation Patterns

How bloating, diarrhea, constipation, fatigue, anemia, and nutrient changes may reveal connected gut, thyroid, immune, metabolic, and recovery patterns

How bloating, diarrhea, constipation, fatigue, anemia, and nutrient changes may reveal connected gut, thyroid, immune, metabolic, hormone, and recovery patterns. Digestive symptoms can be more than an occasional inconvenience. Bloating, diarrhea, constipation, abdominal discomfort, nausea, […]

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July 3, 2026

Does Alcohol Cause Inflammation? Signs, Health Effects, and Lab Tests

How Alcohol Affects the Gut, Liver, Immune System, and Inflammatory Blood Markers

Yes, alcohol can contribute to inflammation, particularly when it is consumed heavily, frequently, or in binge-drinking patterns. Alcohol may irritate the gastrointestinal tract, disrupt the intestinal barrier, alter immune signaling, increase oxidative stress, and place […]

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