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.

Foods Rich in Vitamin K: K1, K2 and Warfarin Safety

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Nutrition & Anticoagulation Warfarin Safety 2026 Update Patient-Friendly Leafy greens are not forbidden on warfarin; sudden changes in their amount are the real problem. This food-by-food guide separates vitamin K1 from K2 and gives you a safer way to eat normally. 📖 ~11 minutes 📅 July 21, 2026 📝 Published: July 21, 2026 🩺 Medically […]

Tumor Lysis Syndrome Labs: Urgent Changes to Act On

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Cancer Treatment Safety Lab Interpretation 2026 Update Patient-Friendly Tumor lysis syndrome can turn a reassuring-looking morning into an emergency within hours. A potassium of 6.0 mmol/L or higher, a rapidly rising creatinine, fainting, palpitations, seizure, severe weakness, or sharply reduced urine after cancer treatment requires immediate contact with the oncology team or emergency care—not a […]

Cholestasis Blood Tests: ALP, GGT and Bilirubin Patterns

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Liver Health Lab Interpretation 2026 Update Patient-Friendly A cholestatic liver pattern usually means ALP and GGT rise more than ALT and AST, sometimes followed by direct bilirubin elevation. New jaundice, dark urine with pale stools, fever, or severe right-upper-abdominal pain needs same-day medical assessment rather than a wait-and-see approach. 📖 ~11 minutes 📅 July 21, […]

Fecal Lactoferrin Test: High Results and Follow-Up

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Digestive Health Lab Interpretation 2026 Update Patient-Friendly A positive result points to neutrophil-driven intestinal inflammation, but it cannot name the cause on its own. The useful next step depends on symptoms, medications, infection risk, and whether blood tests suggest anemia or systemic inflammation. 📖 ~11 minutes 📅 July 21, 2026 📝 Published: July 21, 2026 […]

Granular Casts in Urine: Causes, Risks and Next Steps

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Kidney Health Lab Interpretation 2026 Update Patient-Friendly A small number of granular casts may be temporary after concentrated urine or strenuous exercise, especially when kidney blood tests are stable. Dense muddy-brown casts, rising creatinine, reduced urine output, or protein and blood in urine need prompt kidney-focused assessment. 📖 ~11 minutes 📅 July 21, 2026 📝 […]

Hyaline Casts in Urine: Normal Results and Red Flags

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Kidney Health Lab Interpretation 2026 Update Patient-Friendly A small number of hyaline casts is commonly a temporary concentration effect, not kidney disease. The deciding factor is what else appears in the urine sediment test and kidney panel. 📖 ~11 minutes 📅 July 20, 2026 📝 Published: July 20, 2026 🩺 Medically Reviewed: July 20, 2026 […]

Calcium Levels in Children: Age Ranges and Warning Signs

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Pediatric Health Lab Interpretation 2026 Update Patient-Friendly Most calcium results in children are interpreted against an age-specific laboratory interval, not an adult range. A low total calcium may simply reflect low albumin, while low ionized calcium with twitching, seizures, breathing noise, or a very unwell child needs prompt pediatric assessment. 📖 ~10-12 minutes 📅 July […]

Blood Test for Puffy Eyes: Thyroid, Kidney and Allergy

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Eye Swelling Lab Interpretation 2026 Update Patient-Friendly Most under-eye puffiness comes from sleep, salt, allergies, or normal fluid shifts and does not need blood work. A blood test for puffy eyes becomes sensible when swelling persists for 2–3 weeks, recurs with leg swelling or foamy urine, or appears alongside fatigue, weight change, rash, breathing symptoms, […]

Blood Test for Breast Tenderness: When Hormones Help

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Breast Health Lab Interpretation 2026 Update Patient-Friendly Most breast tenderness that predictably comes and goes with periods does not need a broad hormone panel. The useful question is whether the symptom pattern points to pregnancy, prolactin excess, thyroid dysfunction, medication effects, or a breast problem that needs examination and imaging instead. 📖 ~11 minutes 📅 […]

Troponin I vs Troponin T: Why Heart Test Values Differ

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Cardiac Testing Lab Interpretation 2026 Update Patient-Friendly Troponin I and troponin T both detect injury to heart muscle, but they are different proteins measured by different laboratory methods. The assay name, local upper reference limit, symptoms, ECG, and serial change matter far more than comparing one isolated number online. 📖 ~11 minutes 📅 July 20, […]