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.

Blood Tests for Gut Health: What They Show and Miss

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Digestive Health Lab Interpretation 2026 Update Patient-Friendly Blood tests for gut health can reveal inflammation clues, celiac patterns, anemia, malabsorption, and liver-pancreas overlap—but they cannot prove a healthy microbiome or diagnose leaky gut on their own. As of April 24, 2026, the smartest use of blood work is pattern recognition, not one magic marker. 📖 […]

What Blood Tests Show Vitamin Deficiency? Marker Guide

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Vitamin Deficiency Lab Interpretation 2026 Update Patient-Friendly Fatigue, tingling, hair shedding, and bone pain do not all point to the same lab. The useful answer is a map: which symptom fits B12, vitamin D, folate, ferritin, or something that only looks normal on first pass. 📖 ~11 minutes 📅 April 24, 2026 📝 Published: April […]

How to Read Blood Test Results and Catch What Matters

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Lab Interpretation Doctor Reviewed 2026 Update Patient-Friendly Read the report in this order: confirm timing and units, group results by panel, compare with your own baseline, then ask whether several markers point to the same organ system. That sequence separates normal-range noise from numbers that actually deserve a call. 📖 ~11 minutes 📅 April 24, […]

Lymphoma Blood Test: Can CBC and LDH Suggest Cancer?

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Hematology Lab Interpretation 2026 Update Patient-Friendly A CBC can point toward lymphoma, but it cannot diagnose it. Here is what CBC, LDH, ESR, and CRP actually tell clinicians before biopsy. 📖 ~11 minutes 📅 April 24, 2026 📝 Published: April 24, 2026 🩺 Medically Reviewed: April 24, 2026 ✅ Evidence-Based This guide was written under […]

Diabetes Blood Test: Which Results Diagnose or Monitor?

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Endocrinology Lab Interpretation 2026 Update Patient-Friendly Diagnosis usually comes from fasting glucose, HbA1c, OGTT, or random glucose with symptoms. The same HbA1c can diagnose diabetes on day one and monitor control later, but it does not mean exactly the same thing in both settings. 📖 ~11 minutes 📅 April 24, 2026 📝 Published: April 24, […]

Normal Range for Potassium: Low, High, and Next Steps

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Electrolytes Lab Interpretation 2026 Update Patient-Friendly Most adults fall between 3.5 and 5.0 mmol/L, but the real question is what to do with 3.4, 5.2, or a lab flag that does not match how you feel. 📖 ~11 minutes 📅 April 24, 2026 📝 Published: April 24, 2026 🩺 Medically Reviewed: April 24, 2026 ✅ […]

What Does BUN Mean in a Blood Test? Hydration or Kidneys?

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Kidney Labs Lab Interpretation 2026 Update Patient-Friendly Most isolated BUN results are less dramatic than patients fear. The real trick is reading BUN beside creatinine, eGFR, hydration, diet, and medications. 📖 ~11 minutes 📅 April 23, 2026 📝 Published: April 23, 2026 🩺 Medically Reviewed: April 23, 2026 ✅ Evidence-Based This guide was written under […]

Free Testosterone vs Total Testosterone: What SHBG Changes

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Hormone Testing Lab Interpretation 2026 Update Patient-Friendly A normal-looking testosterone result can still fit with real symptoms if SHBG is pushing the number around. Here is how clinicians decide when free testosterone adds signal rather than noise. 📖 ~11 minutes 📅 April 23, 2026 📝 Published: April 23, 2026 🩺 Medically Reviewed: April 23, 2026 […]

High PSA Blood Test: 8 Common Causes Beyond Cancer

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Urology Lab Interpretation 2026 Update Patient-Friendly A high PSA does not automatically mean cancer. Benign enlargement, inflammation, infection, recent ejaculation, cycling, urinary retention, and recent urinary procedures are common causes, and a repeat test in 6 to 8 weeks often changes the plan. 📖 ~11 minutes 📅 April 23, 2026 📝 Published: April 23, 2026 […]

Coagulation Test: PT, INR, aPTT, Fibrinogen, D-Dimer

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Coagulation Lab Interpretation 2026 Update Patient-Friendly A coagulation test is not one lab: PT/INR checks the extrinsic pathway, aPTT the intrinsic pathway, fibrinogen the clot-building protein, and D-dimer recent clot breakdown. Doctors order them together when they need to sort bleeding, clotting, liver failure, sepsis, pregnancy complications, or pre-procedure risk. 📖 ~11 minutes 📅 April […]