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.

DHEA Blood Test Results: Age, Sex, and Adrenal Clues

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Hormones Lab Interpretation 2026 Update Patient-Friendly A single DHEA result rarely tells the whole story. This patient-first guide shows how endocrinologists read DHEA vs DHEA-S alongside age, sex, symptoms, and the rest of the hormone panel. 📖 ~11 minutes 📅 April 20, 2026 📝 Published: April 20, 2026 🩺 Medically Reviewed: April 20, 2026 ✅ […]

Iron Deficiency Anemia Blood Test: Labs That Change First

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Hematology Lab Interpretation 2026 Update Patient-Friendly The first clue is usually low ferritin, not low hemoglobin. I use a stepwise pattern—ferritin, iron saturation, RDW, MCV, reticulocyte count, then hemoglobin—to catch iron loss earlier and with fewer mistakes. 📖 ~11 minutes 📅 April 20, 2026 📝 Published: April 20, 2026 🩺 Medically Reviewed: April 20, 2026 […]

High WBC on a Blood Test: Causes, Patterns, Next Steps

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Hematology Lab Interpretation 2026 Update Patient-Friendly A mildly high white blood cell count is often reactive and temporary. The differential, the trend, and the rest of the CBC usually decide whether it is reassuring, worth repeating, or genuinely urgent. 📖 ~11 minutes 📅 April 19, 2026 📝 Published: April 19, 2026 🩺 Medically Reviewed: April […]

Kidney Blood Test: What Shifts Before Creatinine Rises

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Kidney Health Lab Interpretation 2026 Update Patient-Friendly Creatinine is useful, but it is often late. This guide explains the earlier renal panel patterns I watch in clinic when kidney dysfunction is being missed on a ‘normal’ lab review. 📖 ~11 minutes 📅 April 19, 2026 📝 Published: April 19, 2026 🩺 Medically Reviewed: April 19, […]

Bilirubin Normal Range by Age: Adults, Newborns, Highs

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Liver Health Lab Interpretation 2026 Update Patient-Friendly Most adult labs use 0.2-1.2 mg/dL for total bilirubin and 0-0.3 mg/dL for direct bilirubin. Newborns are different: their bilirubin normally rises in the first few days, so interpretation depends on hours after birth, not a single adult-style cutoff. 📖 ~11 minutes 📅 April 19, 2026 📝 Published: […]

Low B12 Symptoms: Why a Normal Test Can Still Miss It

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Vitamin B12 Lab Interpretation 2026 Update Patient-Friendly A serum B12 result can look acceptable while tissue-level deficiency is still causing numbness, fatigue, brain fog, or a misleading hemoglobin A1c. The missed cases usually sit in the borderline zone and need smarter follow-up. 📖 ~11 minutes 📅 April 19, 2026 📝 Published: April 19, 2026 🩺 […]

Thyroid Panel: When Free T4, T3, and Antibodies Matter

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Thyroid Health Lab Interpretation 2026 Update Patient-Friendly A full thyroid panel adds value when TSH levels are borderline, suppressed, or mildly high; when symptoms and the number disagree; and when pregnancy, infertility, thyroid medication, or pituitary disease is in the picture. As of April 19, 2026, the extra tests that most often change interpretation are […]

Blood Chemistry Panel: What It Checks, Skips, and Why

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Lab Panels Lab Interpretation 2026 Update Patient-Friendly Patients often ask for a full blood panel when they really mean chemistry testing. Here is what a blood chemistry panel can clarify quickly, and the very real things it can still miss. 📖 ~11 minutes 📅 April 19, 2026 📝 Published: April 19, 2026 🩺 Medically Reviewed: […]

How to Read Blood Test Results When Values Are Borderline

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Borderline Labs Lab Interpretation 2026 Update Patient-Friendly An ALT of 42 U/L or ferritin of 22 ng/mL is not simply fine or bad. The real meaning comes from direction, symptoms, timing, and the rest of the panel. 📖 ~11 minutes 📅 April 19, 2026 📝 Published: April 19, 2026 🩺 Medically Reviewed: April 19, 2026 […]

Prenatal Blood Tests by Trimester: What Each Checks

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Pregnancy Labs Lab Interpretation 2026 Update Patient-Friendly Most pregnancies follow a predictable lab schedule, but the reason each test is timed when it is often matters more than the test itself. Here is the trimester-by-trimester roadmap I wish every patient received with the lab slip. 📖 ~10-12 minutes 📅 April 19, 2026 📝 Published: April […]