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.

GFR Test With Cystatin C: When eGFR Needs Recheck

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Kidney Function Lab Interpretation 2026 Update Patient-Friendly Creatinine-based eGFR is useful, but it can be wrong in predictable people. Cystatin C is often the confirmatory kidney function test when muscle mass, age, training, diet, or a borderline result makes the number hard to trust. 📖 ~11 minutes 📅 May 2, 2026 📝 Published: May 2, […]

Non-HDL Cholesterol Levels: Hidden Risk Beyond LDL

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Cardiometabolic Risk Lab Interpretation 2026 Update Patient-Friendly LDL cholesterol can look fine while the total number of artery-driving particles remains too high. Non-HDL cholesterol is a simple calculation that often exposes that mismatch. 📖 ~11 minutes 📅 May 2, 2026 📝 Published: May 2, 2026 🩺 Medically Reviewed: May 2, 2026 ✅ Evidence-Based This guide […]

Thyroid Blood Test for Hashimoto’s: TSH, TPO and TgAb

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Thyroid Health Lab Interpretation 2026 Update Patient-Friendly A single abnormal thyroid result rarely tells the whole story. Hashimoto’s is usually read as a pattern: TSH, free T4, thyroid antibodies, symptoms, medications, pregnancy status, and repeat testing. 📖 ~12 minutes 📅 May 2, 2026 📝 Published: May 2, 2026 🩺 Medically Reviewed: May 2, 2026 ✅ […]

Lab Work Results: When to Repeat Abnormal Blood Tests

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Patient Guide Lab Interpretation 2026 Update Clinician Reviewed Mildly abnormal numbers are common, but the timing of a repeat test depends on the biomarker, symptoms, medications, and how far the value sits from your baseline. 📖 ~11 minutes 📅 May 2, 2026 📝 Published: May 2, 2026 🩺 Medically Reviewed: May 2, 2026 ✅ Evidence-Based […]

Lab Values in Different Units: Why Results Look Changed

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Lab Interpretation Unit Conversion 2026 Update Patient-Friendly A result can look worse after a lab, country, app, or reporting format changes units. The clinical question is whether the biology changed — not whether the number looks bigger. 📖 ~12 minutes 📅 May 2, 2026 📝 Published: May 2, 2026 🩺 Medically Reviewed: May 2, 2026 […]

Fasting vs Non-Fasting Blood Test: Results That Shift

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Lab Preparation Blood Work 2026 Update Patient-Friendly Most routine blood work survives breakfast. The trick is knowing which markers are meal-sensitive, which are time-sensitive, and which should simply be repeated rather than worried over. 📖 ~11 minutes 📅 May 2, 2026 📝 Published: May 2, 2026 🩺 Medically Reviewed: May 2, 2026 ✅ Evidence-Based This […]

Blood Test for Blood Thinners: INR and Anti-Xa Safety

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Anticoagulation Safety Lab Interpretation 2026 Update Patient-Friendly Warfarin, heparin, LMWH and DOACs are monitored with different tests. The safest interpretation depends on timing, kidney function, bleeding symptoms and the exact drug. 📖 ~11 minutes 📅 May 2, 2026 📝 Published: May 2, 2026 🩺 Medically Reviewed: May 2, 2026 ✅ Evidence-Based This guide was written […]

P-Tau Blood Test: Alzheimer’s Clues, Accuracy and Limits

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Alzheimer’s Biomarkers Lab Interpretation 2026 Update Patient-Friendly Phosphorylated tau blood tests are becoming useful Alzheimer’s biomarkers, but they are not a home diagnosis. The result only makes sense beside symptoms, age, kidney function, cognitive testing and the exact assay used. 📖 ~11 minutes 📅 May 2, 2026 📝 Published: May 2, 2026 🩺 Medically Reviewed: […]

DUTCH Hormone Test: Metabolites, Uses, and Limits

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Hormone Testing Lab Interpretation 2026 Update Patient-Friendly Dried urine hormone testing can map steroid metabolites in a way blood tests usually cannot, but it is not the right tool for every hormone question. 📖 ~11 minutes 📅 May 2, 2026 📝 Published: May 2, 2026 🩺 Medically Reviewed: May 2, 2026 ✅ Evidence-Based This guide […]

Liquid Biopsy Blood Test: ctDNA Limits Explained

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Cancer Screening ctDNA Interpretation 2026 Update Patient-Friendly ctDNA cancer screening is promising, but it is not a whole-body cancer answer. The safest interpretation is pattern-based: signal, cancer risk, imaging target, and whether tissue confirmation is still needed. 📖 ~11 minutes 📅 May 2, 2026 📝 Published: May 2, 2026 🩺 Medically Reviewed: May 2, 2026 […]