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.

Normal Range for Progesterone by Cycle Day and Pregnancy

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Women’s Health Lab Interpretation 2026 Update Patient-Friendly Progesterone is a timing-sensitive hormone, so the same number can be normal, low or expected depending on where you are in the cycle or pregnancy. 📖 ~11 minutes 📅 July 13, 2026 📝 Published: July 13, 2026 🩺 Medically Reviewed: July 13, 2026 ✅ Evidence-Based This guide was […]

Normal Range for GGT: Liver Cutoffs by Sex and Context

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Liver Enzymes Lab Interpretation 2026 Update Patient-Friendly GGT is useful, but it is a noisy liver enzyme. The same number can mean very different things depending on your lab range, sex, alcohol pattern, medicines, and the rest of the liver panel. 📖 ~11 minutes 📅 July 13, 2026 📝 Published: July 13, 2026 🩺 Medically […]

Anti-dsDNA Test: Positive Results and Lupus Flare Clues

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Lupus Testing Lab Interpretation 2026 Update Patient-Friendly A positive anti-dsDNA result can be very meaningful in lupus, but only when the clinical pattern fits. The real clue is often the trio: dsDNA trend, complement level, and urine protein. 📖 ~11 minutes 📅 July 13, 2026 📝 Published: July 13, 2026 🩺 Medically Reviewed: July 13, […]

Soluble Transferrin Receptor Test When Ferritin Misleads

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Iron Status Lab Interpretation 2026 Update Patient-Friendly Soluble transferrin receptor rises when the marrow cannot access enough iron, so it can reveal true iron deficiency even when ferritin is inflated by inflammation, pregnancy, chronic disease or a recent infection. 📖 ~11 minutes 📅 July 12, 2026 📝 Published: July 12, 2026 🩺 Medically Reviewed: July […]

Thiamine Test: Low B1 Symptoms, Results and Recheck

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Vitamin B1 Lab Interpretation 2026 Update Patient-Friendly A low B1 result can be subtle until it is suddenly not subtle at all. The tricky cases are alcohol use, bariatric surgery, vomiting and restrictive diets, where doctors often treat before the lab comes back. 📖 ~11 minutes 📅 July 12, 2026 📝 Published: July 12, 2026 […]

What Does HGB Mean? Hemoglobin on CBC Lab Results

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CBC Guide Lab Interpretation 2026 Update Patient-Friendly HGB stands for hemoglobin, the oxygen-carrying protein measured on a complete blood count. The useful part is not just whether HGB is low or high, but how it lines up with RBC and HCT. 📖 ~11 minutes 📅 July 12, 2026 📝 Published: July 12, 2026 🩺 Medically […]

Addison Disease Symptoms: Cortisol, Sodium, ACTH Clues

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Endocrine Health Lab Interpretation 2026 Update Patient-Friendly Fatigue, salt craving, low blood pressure and darker skin make more sense when you connect them to cortisol, aldosterone, sodium and ACTH. The pattern matters more than any single symptom. 📖 ~11 minutes 📅 July 12, 2026 📝 Published: July 12, 2026 🩺 Medically Reviewed: July 12, 2026 […]

Chronic Kidney Disease Stages: eGFR and ACR Guide

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Kidney Health Lab Interpretation 2026 Update Patient-Friendly CKD staging is a two-axis risk system: filtration tells one story, urine albumin tells another. I explain how doctors combine both before calling a kidney result low-risk or high-risk. 📖 ~11 minutes 📅 July 12, 2026 📝 Published: July 12, 2026 🩺 Medically Reviewed: July 12, 2026 ✅ […]

Cologuard Test Results: Meaning and Next Steps

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Colon Cancer Screening Stool DNA Test 2026 Update Patient-Friendly A stool DNA screening result can be useful, but it is not a diagnosis. The real question is what you do next — especially after a positive result or symptoms despite a negative one. 📖 ~11 minutes 📅 July 11, 2026 📝 Published: July 11, 2026 […]

Stool Elastase Test: Low Results and Pancreas Clues

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Pancreas Testing Lab Interpretation 2026 Update Patient-Friendly A low stool elastase test usually suggests reduced pancreatic enzyme output, especially below 200 µg/g. Very watery diarrhea can falsely lower the result by diluting the stool sample, so doctors often repeat it on a formed sample before diagnosing pancreatic insufficiency. 📖 ~11 minutes 📅 July 11, 2026 […]