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.

Which Supplements Not to Take Together: Timing Guide

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Supplement Timing Lab Interpretation 2026 Update Patient-Friendly Most supplement problems are not dangerous interactions; they are timing mistakes that waste money, confuse blood tests, or make nausea and constipation worse. 📖 ~11 minutes 📅 April 28, 2026 📝 Published: April 28, 2026 🩺 Medically Reviewed: April 28, 2026 ✅ Evidence-Based This guide was written under […]

Magnesium Glycinate vs Citrate: Sleep, Stress, Labs

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Supplements Lab Interpretation 2026 Update Patient-Friendly Glycinate usually fits sleep and stress goals; citrate is the practical choice when constipation is part of the picture. The lab twist is that serum magnesium can look normal even when total-body magnesium is running low. 📖 ~11 minutes 📅 April 28, 2026 📝 Published: April 28, 2026 🩺 […]

Blood Tests for Fertility: Hormones Both Partners Need

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Fertility Hormones Lab Interpretation 2026 Update Couple-Focused The most useful blood tests for fertility check ovulation, ovarian reserve, thyroid function, prolactin, androgen excess, testosterone signalling and the male pituitary-testicular axis. Couples get clearer answers when both partners test early, not after months of guessing. 📖 ~11 minutes 📅 April 28, 2026 📝 Published: April 28, […]

What Blood Tests Show Heart Problems? Marker Guide

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Cardiology Markers Lab Interpretation 2026 Update Patient-Friendly Heart blood tests can point toward a heart attack, heart failure, vascular inflammation, rhythm risk and long-term artery disease. They are powerful clues, not a replacement for ECGs, imaging or a clinician who knows your symptoms. 📖 ~11 minutes 📅 April 28, 2026 📝 Published: April 28, 2026 […]

What Blood Tests Should I Get for Easy Bruising?

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Easy Bruising Coagulation Labs 2026 Update Patient-Friendly A symptom-first guide to the lab patterns doctors usually check when bruises, nosebleeds, heavy periods, or prolonged bleeding do not have an obvious explanation. 📖 ~11 minutes 📅 April 28, 2026 📝 Published: April 28, 2026 🩺 Medically Reviewed: April 28, 2026 ✅ Evidence-Based This guide was written […]

Food Intolerance Blood Test: IgG Results and Limits

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Food Intolerance Lab Interpretation 2026 Update Patient-Friendly IgG food panels often look precise, but the medical meaning is narrower than the marketing suggests. Here is how I explain them to patients with bloating, fatigue, rashes, or confusing food reactions. 📖 ~11 minutes 📅 April 28, 2026 📝 Published: April 28, 2026 🩺 Medically Reviewed: April […]

Negative ANA Test but Still Sick: What Doctors Check

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Autoimmune Testing Lab Interpretation 2026 Update Patient-Friendly A negative ANA lowers the odds of lupus, but it does not explain fatigue, joint pain, rashes, dry eyes, or nerve symptoms. The next step is pattern-based testing, not repeating the same lab forever. 📖 ~11 minutes 📅 April 28, 2026 📝 Published: April 28, 2026 🩺 Medically […]

Normal Range for TSH: Age, Timing, Medication Clues

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Thyroid Testing Lab Interpretation 2026 Update Patient-Friendly A TSH result near the edge of normal can mean very different things depending on when and how it was measured. Here is how I read the grey-zone results in real practice. 📖 ~11 minutes 📅 April 28, 2026 📝 Published: April 28, 2026 🩺 Medically Reviewed: April […]

Tumor Markers Blood Test: Which Ones Are Worth Ordering

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Cancer Markers Lab Interpretation 2026 Update Patient-Friendly Most cancer blood test markers are not good screening tools for healthy people. They become much more useful when the clinical question is narrow: monitoring a known cancer, checking recurrence risk, or clarifying a suspicious scan. 📖 ~11 minutes 📅 April 28, 2026 📝 Published: April 28, 2026 […]

Low Testosterone Blood Test: Levels, Causes, Next Steps

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Endocrinology Lab Interpretation 2026 Update Patient-Friendly A single low result is not the diagnosis. The pattern across timing, symptoms, SHBG, LH, FSH and prolactin is what tells us whether this is true hypogonadism or a misleading morning on paper. 📖 ~11 minutes 📅 April 27, 2026 📝 Published: April 27, 2026 🩺 Medically Reviewed: April […]