Dr. Thomas Klein is a board-certified clinical hematologist serving as Chief Medical Officer at Kantesti AI. With over 15 years of experience in laboratory medicine and a strong interest in AI-supported interpretation of blood test results, he works to connect new technology with everyday clinical practice. His areas of interest include biomarker analysis, clinical decision support research and population-specific reference range optimization. As CMO, he contributes clinical input to the platform's internal benchmarking and provides clinical oversight for the medical quality of Kantesti's educational reports.

Immunoglobulin Test: Reading IgG, IgA and IgM Together

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Immune Health Lab Interpretation 2026 Update Patient-Friendly An immunoglobulin test is most useful when IgG, IgA and IgM are read as a pattern, not three isolated flags. High values can reflect broad immune activation or a single abnormal protein; low values can point to medicines, protein loss, or impaired antibody production. 📖 ~11 minutes 📅 September 5, 2026 📝 Published: September 5, 2026 🩺 Medically Reviewed: September 5, 2026 ✅ Evidence-Based This guide was written under the leadership of Dr. Thomas Klein, MD in collaboration with the Kantesti AI Medical Advisory Board, including contributions from Prof. Dr. Hans Weber and medical review by Dr. Sarah Mitchell, MD, PhD. Lead Author […]

Transferrin Test: Why Inflammation Lowers It

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Iron Studies Lab Interpretation 2026 Update Patient-Friendly A low transferrin result can reflect the liver’s response to inflammation rather than depleted iron stores. Reading serum iron, ferritin, CRP, and transferrin together prevents common mistakes. 📖 ~11 minutes 📅 September 5, 2026 📝 Published: September 5, 2026 🩺 Medically Reviewed: September 5, 2026 ✅ Evidence-Based This guide was written under the leadership of Dr. Thomas Klein, MD in collaboration with the Kantesti AI Medical Advisory Board, including contributions from Prof. Dr. Hans Weber and medical review by Dr. Sarah Mitchell, MD, PhD. Lead Author Thomas Klein, MD Chief Medical Officer, Kantesti AI Dr. Thomas Klein is a board-certified clinical hematologist and […]

Beta hCG Test After Miscarriage: Expected Decline

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Pregnancy Health Lab Interpretation 2026 Update Patient-Friendly After a miscarriage, a beta hCG test should show a clear downward trend, but no single value can prove that the pregnancy tissue has passed. The speed of decline depends on the starting level, gestational age, treatment, and whether ectopic pregnancy has been safely excluded. 📖 ~11 minutes 📅 September 5, 2026 📝 Published: September 5, 2026 🩺 Medically Reviewed: September 5, 2026 ✅ Evidence-Based This guide was written under the leadership of Dr. Thomas Klein, MD in collaboration with the Kantesti AI Medical Advisory Board, including contributions from Prof. Dr. Hans Weber and medical review by Dr. Sarah Mitchell, MD, PhD. Lead […]

What Does ALT Stand For? Alanine Aminotransferase Explained

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Liver Health Lab Interpretation 2026 Update Patient-Friendly ALT is a commonly reported liver enzyme, but it is a signal of cell stress rather than a diagnosis. The meaning comes from its size, pattern, timing, and the rest of your liver panel. 📖 ~11 minutes 📅 September 5, 2026 📝 Published: September 5, 2026 🩺 Medically Reviewed: September 5, 2026 ✅ Evidence-Based This guide was written under the leadership of Dr. Thomas Klein, MD in collaboration with the Kantesti AI Medical Advisory Board, including contributions from Prof. Dr. Hans Weber and medical review by Dr. Sarah Mitchell, MD, PhD. Lead Author Thomas Klein, MD Chief Medical Officer, Kantesti AI Dr. Thomas […]

Sickle Cell Anemia: Screening, Symptoms and Urgent Signs

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Hematology Lab Interpretation 2026 Update Patient-Friendly Sickle cell anemia is not one test, one symptom, or one level of urgency. This patient-first guide separates carrier status, confirmed disease, routine monitoring and situations that need emergency care. 📖 ~11 minutes 📅 September 4, 2026 📝 Published: September 4, 2026 🩺 Medically Reviewed: September 4, 2026 ✅ Evidence-Based This guide was written under the leadership of Dr. Thomas Klein, MD in collaboration with the Kantesti AI Medical Advisory Board, including contributions from Prof. Dr. Hans Weber and medical review by Dr. Sarah Mitchell, MD, PhD. Lead Author Thomas Klein, MD Chief Medical Officer, Kantesti AI Dr. Thomas Klein is a board-certified clinical […]

Cirrhosis Symptoms: Early Signs and Blood Test Clues

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Liver Health Lab Interpretation 2026 Update Patient-Friendly Early cirrhosis often causes no obvious pain: fatigue, sleep changes, bruising, itch, and a falling platelet count may arrive before jaundice. The useful clue is usually a pattern across liver tests, blood count, and fibrosis scores—not one abnormal enzyme. 📖 ~11 minutes 📅 September 4, 2026 📝 Published: September 4, 2026 🩺 Medically Reviewed: September 4, 2026 ✅ Evidence-Based This guide was written under the leadership of Dr. Thomas Klein, MD in collaboration with the Kantesti AI Medical Advisory Board, including contributions from Prof. Dr. Hans Weber and medical review by Dr. Sarah Mitchell, MD, PhD. Lead Author Thomas Klein, MD Chief Medical […]

Calprotectin vs Lactoferrin: Choosing a Stool Test

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Gut Health Lab Interpretation 2026 Update Patient-Friendly Both tests detect neutrophil-driven intestinal inflammation, but calprotectin is usually the more useful quantitative monitoring tool. The right result is one that changes the next clinical decision—not one that labels you with IBD. 📖 ~11 minutes 📅 September 4, 2026 📝 Published: September 4, 2026 🩺 Medically Reviewed: September 4, 2026 ✅ Evidence-Based This guide was written under the leadership of Dr. Thomas Klein, MD in collaboration with the Kantesti AI Medical Advisory Board, including contributions from Prof. Dr. Hans Weber and medical review by Dr. Sarah Mitchell, MD, PhD. Lead Author Thomas Klein, MD Chief Medical Officer, Kantesti AI Dr. Thomas Klein […]

Positive FIT Test: Urgency, Colonoscopy and Next Steps

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Bowel Screening Lab Interpretation 2026 Update Patient-Friendly A positive FIT test means human haemoglobin was found in your stool. It does not diagnose cancer, but it does require a diagnostic colonoscopy—ideally arranged within 2 weeks and completed within 3 months; seek same-day care sooner for heavy rectal bleeding, fainting, severe pain, or black tarry stool. 📖 ~11 minutes 📅 September 4, 2026 📝 Published: September 4, 2026 🩺 Medically Reviewed: September 4, 2026 ✅ Evidence-Based This guide was written under the leadership of Dr. Thomas Klein, MD in collaboration with the Kantesti AI Medical Advisory Board, including contributions from Prof. Dr. Hans Weber and medical review by Dr. Sarah Mitchell, […]

Foamy Urine Causes: When Persistent Bubbles Need Testing

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Kidney Health Lab Interpretation 2026 Update Patient-Friendly A few bubbles after a fast urine stream are usually physics. Foam that repeatedly covers the bowl, lasts after flushing, or comes with swelling deserves a urine albumin test rather than guesswork. 📖 ~11 minutes 📅 September 4, 2026 📝 Published: September 4, 2026 🩺 Medically Reviewed: September 4, 2026 ✅ Evidence-Based This guide was written under the leadership of Dr. Thomas Klein, MD in collaboration with the Kantesti AI Medical Advisory Board, including contributions from Prof. Dr. Hans Weber and medical review by Dr. Sarah Mitchell, MD, PhD. Lead Author Thomas Klein, MD Chief Medical Officer, Kantesti AI Dr. Thomas Klein is […]

Runner’s Hematuria: Pink Urine After Exercise Explained

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Sports Medicine Urinalysis 2026 Update Patient-Friendly A pink or tea-coloured urine sample after a long run is often temporary exercise-induced hematuria, but visible colour should never be automatically dismissed. The timing, microscope findings, symptoms, and a properly rested repeat sample tell the real story. 📖 ~11 minutes 📅 September 3, 2026 📝 Published: September 3, 2026 🩺 Medically Reviewed: September 3, 2026 ✅ Evidence-Based This guide was written under the leadership of Dr. Thomas Klein, MD in collaboration with the Kantesti AI Medical Advisory Board, including contributions from Prof. Dr. Hans Weber and medical review by Dr. Sarah Mitchell, MD, PhD. Lead Author Thomas Klein, MD Chief Medical Officer, Kantesti […]