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.

Supplements for Immune System: Lab Safety Checks

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Immune Support Lab Interpretation 2026 Update Patient-Friendly Immune support is not just about adding more capsules. The safer approach is to match zinc, vitamin D, vitamin C, elderberry and probiotics to CBC, inflammation, kidney, liver and nutrient patterns. 📖 ~11 minutes 📅 May 27, 2026 📝 Published: May 27, 2026 🩺 Medically Reviewed: May 27, 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 […]

Supplements for Adrenal Fatigue: Cortisol Safety Guide

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Cortisol Safety Lab Interpretation 2026 Update Patient-Friendly A physician-led, lab-first look at adrenal support supplements, cortisol testing, electrolytes, sleep rhythm, and medication safety. The goal is not to dismiss fatigue; it is to stop guesswork from hiding treatable disease. 📖 ~11 minutes 📅 May 26, 2026 📝 Published: May 26, 2026 🩺 Medically Reviewed: May 26, 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 […]

Best Supplements for Low Ferritin: Labs to Recheck

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Iron Stores Lab Interpretation 2026 Update Patient-Friendly A practical, lab-guided guide to choosing iron forms and supportive nutrients without over-supplementing or missing heavy periods, low intake, or poor absorption. 📖 ~11 minutes 📅 May 26, 2026 📝 Published: May 26, 2026 🩺 Medically Reviewed: May 26, 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 internist with over 15 years […]

What Blood Tests Detect Diabetes After Gestational Diabetes

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Gestational Diabetes Lab Interpretation 2026 Update Patient-Friendly A practical postpartum screening guide for anyone told their pregnancy sugars were normal again, but still wants to know what comes next. 📖 ~11 minutes 📅 May 26, 2026 📝 Published: May 26, 2026 🩺 Medically Reviewed: May 26, 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 internist with over 15 years […]

Blood Test Trend Analysis: Slow Changes That Matter

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Trend Analysis Lab Interpretation 2026 Update Patient-Friendly A normal result can still move in the wrong direction. The clinical trick is deciding whether that movement is random noise, a new baseline, or the first hint of risk. 📖 ~11 minutes 📅 May 26, 2026 📝 Published: May 26, 2026 🩺 Medically Reviewed: May 26, 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 […]

Heart Disease Blood Test for Women: Missed Markers

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Women's Heart Health Lab Interpretation 2026 Update Patient-Friendly Standard cholesterol is useful, but it can look reassuring while female-specific risk markers are quietly abnormal. The missed clues often sit in ApoB, Lp(a), hs-CRP, pregnancy history, autoimmune patterns, and metabolic labs. 📖 ~11 minutes 📅 May 26, 2026 📝 Published: May 26, 2026 🩺 Medically Reviewed: May 26, 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 […]

Rheumatoid Factor Negative: Can RA Still Be Diagnosed?

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Rheumatology Lab Interpretation 2026 Update Patient-Friendly A negative rheumatoid factor can feel reassuring, but it is only one piece of the rheumatoid arthritis puzzle. The diagnosis often depends on anti-CCP, inflammatory markers, imaging and the pattern of swollen joints. 📖 ~11 minutes 📅 May 26, 2026 📝 Published: May 26, 2026 🩺 Medically Reviewed: May 26, 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 […]

High D-Dimer in Pregnancy or After Surgery: Meaning

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Clotting Marker Pregnancy Labs Post-Surgery Safety 2026 Update D-dimer is a clot-breakdown signal, not a clot diagnosis. The tricky part is knowing when a high result is expected and when the symptom pattern needs imaging. 📖 ~11 minutes 📅 May 26, 2026 📝 Published: May 26, 2026 🩺 Medically Reviewed: May 26, 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 […]

High White Blood Cell Count: Stress, Steroids or Infection?

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CBC Interpretation Lab Interpretation 2026 Update Patient-Friendly A high WBC result is common, often temporary, and not automatically cancer. The trick is reading the differential, symptoms, medication history, and trend together. 📖 ~11 minutes 📅 May 25, 2026 📝 Published: May 25, 2026 🩺 Medically Reviewed: May 25, 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 internist with over […]

Testosterone Levels After TRT: Timing and Safety Labs

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TRT Monitoring Lab Interpretation 2026 Update Patient-Friendly TRT lab results can look excellent, low, or dangerously high depending on when the sample is taken. The timing rule is different for gels, weekly injections, longer-interval injections, and safety monitoring. 📖 ~11 minutes 📅 May 25, 2026 📝 Published: May 25, 2026 🩺 Medically Reviewed: May 25, 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 […]