Markers and Analytes
Biomarkers and analytes used in laboratory evaluation pathways.
Browse this Medical Laboratory Library collection for markers and analytes reference articles that support laboratory lookup and Medical Laboratory Science education.
112 references in this catalogue
Catalogue references
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Molecular Oncology Overview
Quick reference: ordered oncology molecular biomarker testing, application frame only; detection ≠ automatic clinical significance; no treatment advice from training content.
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BCR::ABL1 Testing
Quick reference: BCR::ABL1 molecular testing as a representative oncology application for diagnosis and monitoring literacy.
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Selected Somatic Mutation Testing
Quick reference: selected somatic mutation testing with representative markers only, not exhaustive lists.
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Introduction to Kidney Function Testing . Chemistry
Introduce the laboratory renal panel, common physician requests, and the MLS role in kidney function assessment.
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Kidney Physiology . Chemistry
Relate nephron filtration, reabsorption, and secretion to routine renal chemistry measurements.
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Glomerular Filtration Rate (GFR) . Chemistry
Define GFR as a filtration concept and connect clearance principles to laboratory kidney assessment.
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Creatinine . Chemistry
Interpret creatinine methods, muscle-mass effects, assay interferences, and laboratory reporting caveats.
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Blood Urea Nitrogen (BUN) . Chemistry
Interpret BUN reporting conventions, prerenal versus renal patterns, and non-renal causes of elevation.
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Urea . Chemistry
Relate urea physiology and SI unit reporting to BUN conversion and renal chemistry interpretation.
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Estimated GFR (eGFR) . Chemistry
Interpret eGFR equations, reporting conventions, and limitations for CKD versus acute settings.
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Uric Acid . Chemistry
Interpret uric acid physiology, laboratory methods, and renal handling in chemistry practice.
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Cystatin C . Chemistry
Describe cystatin C as an alternative filtration marker and its role beside creatinine-based eGFR.
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Acute Kidney Injury (AKI) . Chemistry
Recognize laboratory kinetics and patterns consistent with AKI without treating criteria as universal dogma.
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Chronic Kidney Disease (CKD) . Chemistry
Stage and interpret CKD using eGFR and chronicity clues without conflating AKI laboratory kinetics.
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Laboratory Assessment of Renal Function . Chemistry
Select and sequence renal chemistry tests for common physician requests and workflow pathways.
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Urinalysis Correlation . Chemistry
Correlate chemistry renal markers with urinalysis findings that support glomerular or tubular patterns.
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Kidney Function Test Interpretation . Chemistry
Integrate creatinine, BUN/urea, eGFR, and urinalysis into prerenal, renal, and postrenal laboratory patterns.
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Clinical Cases . Chemistry
Apply Module 4 concepts to case-based renal chemistry scenarios from order entry to report.
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Common Laboratory Pitfalls . Chemistry
Prevent and recognize common renal chemistry errors, interferences, and misinterpretation traps.
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Introduction to Liver Function Testing . Chemistry
Map the laboratory liver panel, common requests, and MLS workflow for liver function testing.
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Liver Physiology . Chemistry
Relate hepatic metabolism, excretion, and synthesis to routine liver chemistry markers.
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ALT (Alanine Aminotransferase) . Chemistry
Interpret ALT as a relatively liver-selective aminotransferase with hepatocellular injury framing.
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AST (Aspartate Aminotransferase) . Chemistry
Interpret AST tissue sources including liver and muscle, and pair with ALT for hepatocellular framing.
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Alkaline Phosphatase (ALP) . Chemistry
Interpret ALP as a multi-tissue enzyme used in cholestasis framing, with bone and physiologic confounders.
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Gamma-Glutamyl Transferase (GGT) . Chemistry
Use GGT to support hepatic/biliary origin of ALP elevation and recognize common non-specific elevators.
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Bilirubin Metabolism . Chemistry
Relate bilirubin production, conjugation, and excretion to laboratory fractions and jaundice patterns.
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Albumin . Chemistry
Interpret albumin as a hepatic synthetic and oncotic marker with important non-hepatic hypoalbuminemia causes.
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Total Protein . Chemistry
Interpret total protein with albumin–globulin framing for protein-status and liver-related panels.
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Liver Synthetic Function . Chemistry
Frame albumin and related markers as synthetic-function indicators distinct from acute enzyme injury.
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Hepatocellular vs Cholestatic Patterns . Chemistry
Classify LFT patterns using ALT/AST versus ALP±GGT relationships for hepatocellular vs cholestatic framing.
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Liver Function Test Interpretation . Chemistry
Integrate enzymes, bilirubin, and proteins into a systematic LFT interpretation workflow.
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Clinical Cases . Chemistry
Integrate Module 5 liver chemistry concepts across case-based laboratory scenarios.
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Common Laboratory Pitfalls . Chemistry
Prevent and recognize common liver chemistry errors, interferences, and misinterpretation traps.
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Sodium . Chemistry
Interpret sodium results with water-balance context, osmolality clues, and common preanalytical pitfalls.
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Potassium . Chemistry
Evaluate hypo- and hyperkalemia, including pseudohyperkalemia from hemolysis and critical-value response.
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Chloride . Chemistry
Interpret chloride with sodium and bicarbonate context in acid–base and hydration assessment.
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Calcium . Chemistry
Interpret total and ionized calcium concepts, albumin effects, and common mineral-panel pitfalls.
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Magnesium . Chemistry
Interpret magnesium results with attention to collection, hemolysis, and clinical correlation limits.
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Phosphate . Chemistry
Interpret phosphate with calcium/PTH context and preanalytical variables that alter reported values.
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Bicarbonate . Chemistry
Interpret bicarbonate/total CO₂ on chemistry panels as an acid–base clue with method caveats.
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Osmolality . Chemistry
Use measured and calculated osmolality and osmolar gap in laboratory sodium and toxin evaluation.
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Anion Gap . Chemistry
Calculate and interpret the anion gap, including albumin adjustment and method-related caveats.
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Acid-Base Disorders . Chemistry
Classify metabolic and respiratory acid–base disorders using electrolytes, bicarbonate, and blood-gas data.
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Laboratory Interpretation . Chemistry
Integrate electrolytes, osmolality, anion gap, and acid–base data into a bench interpretation workflow.
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Clinical Cases . Chemistry
Apply Module 6 concepts to case-based electrolyte and acid–base laboratory scenarios.
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Plasma Proteins . Chemistry
Classify major plasma proteins by function and laboratory significance
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Albumin . Proteins Module Review
Interpret albumin within protein-panel and SPEP fraction context
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Globulins . Chemistry
Interpret calculated and electrophoretic globulin fractions
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Total Protein . Proteins Module Review
Interpret total protein with albumin/globulin context on chemistry panels
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A/G Ratio . Chemistry
Calculate and interpret the albumin/globulin ratio as a screening clue
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Protein Electrophoresis . Chemistry
Identify SPEP fractions (albumin, α1, α2, β, γ) and their lab meaning
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Monoclonal Gammopathies . Chemistry
Interpret monoclonal protein laboratory findings on SPEP/IFE
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Multiple Myeloma Laboratory Findings . Chemistry
Recognize laboratory signatures associated with myeloma workups (anemia, renal, calcium, protein pattern)
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Laboratory Interpretation . Chemistry
Integrate total protein, albumin, A/G ratio, SPEP, and monoclonal findings into a bench workflow
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Cholesterol . Chemistry
Interpret total cholesterol measurement, fasting considerations, and laboratory reporting caveats.
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HDL . Chemistry
Interpret HDL cholesterol as a lipid-panel fraction with method and clinical-correlation caveats.
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LDL . Chemistry
Interpret calculated and direct LDL cholesterol, including Friedewald limitations and reporting checks.
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Triglycerides . Chemistry
Interpret triglycerides with fasting status, lipemia interference, and assay caveats at the chemistry bench.
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Lipoproteins . Chemistry
Relate lipoprotein classes and transport to lipid-panel fractions used in laboratory practice.
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Lipid Disorders . Chemistry
Classify common dyslipidemia laboratory patterns and recognize secondary influences on lipid results.
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Cardiovascular Risk Assessment . Chemistry
Place lipid-panel results in laboratory cardiovascular risk assessment pathways without treating management.
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Laboratory Interpretation . Chemistry
Integrate cholesterol, HDL, LDL, triglycerides, and calculations into a lipid-panel interpretation workflow.
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Clinical Cases . Chemistry
Apply Module 8 concepts to case-based lipid chemistry scenarios from order entry to report.
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Troponin . Chemistry
Interpret cardiac troponin (including high-sensitivity assays), 99th-percentile framing, and serial testing at the chemistry bench.
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CK . Chemistry
Interpret total creatine kinase with tissue-source awareness and limitations versus cardiac-specific markers.
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CK-MB . Chemistry
Place CK-MB in modern cardiac pathways relative to troponin-first laboratory strategies.
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Myoglobin . Chemistry
Interpret myoglobin as a historical early marker with limited cardiac specificity in current laboratory practice.
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BNP . Chemistry
Interpret B-type natriuretic peptide for heart-failure laboratory assessment with assay-specific decision limits.
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NT-proBNP . Chemistry
Interpret NT-proBNP with attention to assay differences from BNP and laboratory reporting caveats.
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Acute Coronary Syndrome Laboratory Diagnosis . Chemistry
Apply timed troponin protocols, delta criteria, and critical cardiac result communication for ACS laboratory diagnosis.
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Timing of Biomarker Release . Chemistry
Relate rise, peak, and clearance timing of cardiac markers to specimen collection and serial testing strategy.
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Interpretation . Chemistry
Integrate troponin, CK/CK-MB, myoglobin, and natriuretic peptides with timing and non-ACS elevation differentials.
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Clinical Cases . Chemistry
Apply Module 9 concepts to case-based cardiac biomarker laboratory scenarios from order to report.
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Amylase . Chemistry
Interpret amylase elevations, pancreatic vs salivary isoenzyme concepts, and non-pancreatic hyperamylasemia at the chemistry bench.
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Lipase . Chemistry
Interpret lipase as the preferred pancreatic enzyme marker with assay specificity, kinetics, and institutional method context.
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Acute Pancreatitis . Chemistry
Apply laboratory enzyme criteria and supportive chemistry findings for acute pancreatitis diagnosis framing, not treatment.
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Chronic Pancreatitis . Chemistry
Interpret laboratory findings in chronic pancreatitis, including limited enzyme utility and exocrine-insufficiency testing context.
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Pancreatic Laboratory Diagnosis
Integrate amylase, lipase, and clinical context into a laboratory diagnosis pathway for pancreatic injury and insufficiency evaluation.
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Pancreatic Laboratory Interpretation
Integrate pancreatic enzyme results with timing, non-pancreatic differentials, and reporting caveats for release-ready interpretation.
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Pancreatic Clinical Cases . Chemistry
Apply Module 10 concepts to case-based pancreatic biomarker laboratory scenarios from order to report.
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Thyroid Function Tests . Chemistry
Frame thyroid panel strategy (TSH-first vs free hormone panels), feedback logic, and immunoassay caveats at the chemistry bench.
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TSH . Chemistry
Interpret TSH as the primary thyroid screening marker with assay generations, feedback context, and institutional intervals.
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Free T4 . Chemistry
Interpret free thyroxine with binding-protein awareness, method differences, and pairing with TSH patterns.
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Free T3 . Chemistry
Place free triiodothyronine in thyroid laboratory pathways relative to TSH and free T4.
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Cortisol . Chemistry
Interpret cortisol with diurnal timing, specimen type, and immunoassay context for adrenal laboratory assessment.
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ACTH . Chemistry
Interpret ACTH with preanalytical strictness (collection/handling) and pairing with cortisol for HPA-axis laboratory framing.
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Insulin . Chemistry
Interpret insulin immunoassay results with hypoglycemia workup context, timing, and assay limitations, laboratory framing only.
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C-Peptide . Chemistry
Interpret C-peptide as a marker of endogenous insulin production distinct from exogenous insulin immunoassay results.
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Parathyroid Hormone . Chemistry
Interpret PTH with calcium/phosphate context and assay generation (intact PTH) considerations for mineral metabolism.
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Vitamin D . Chemistry
Interpret 25-hydroxyvitamin D (and related metabolites when ordered) with method and decision-limit verification.
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Laboratory Interpretation . Chemistry
Integrate thyroid, adrenal, insulin/C-peptide, and mineral endocrine markers with feedback logic and immunoassay pitfalls.
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Clinical Cases . Chemistry
Apply Module 11 concepts to case-based endocrine laboratory scenarios from order to report.
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General Principles . Chemistry
Frame tumor markers as adjuncts for monitoring and selected diagnosis support, never as standalone proof of malignancy.
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AFP . Chemistry
Interpret alpha-fetoprotein in selected tumor and non-malignant contexts with method and monitoring caveats.
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CEA . Chemistry
Interpret carcinoembryonic antigen for monitoring framing with smoking and non-malignant elevation awareness.
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CA-125 . Chemistry
Interpret CA-125 with ovarian monitoring context and common non-malignant elevations (e.g., endometriosis, menstruation).
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CA 19-9 . Chemistry
Interpret CA 19-9 with pancreaticobiliary monitoring framing and Lewis-negative non-producer awareness.
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PSA . Chemistry
Interpret total and free PSA with method continuity, age context, and monitoring-versus-screening laboratory distinctions.
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Beta-hCG . Chemistry
Interpret β-hCG in pregnancy and selected tumor contexts with assay specificity and hook-effect awareness.
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Limitations . Chemistry
Catalog sensitivity/specificity limits, non-malignant elevations, assay switching hazards, and why markers never stand alone for malignancy diagnosis.
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Interpretation . Chemistry
Integrate serial tumor-marker results with assay identity, clinical context, and release-ready reporting caveats.
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Clinical Cases . Chemistry
Apply Module 12 concepts to case-based tumor-marker laboratory scenarios from order to report.
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Therapeutic Drug Monitoring . Chemistry
Explain TDM rationale, trough/peak timing, and therapeutic-range framing as institutional/method-specific, never as universal dogma.
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Digoxin . Chemistry
Interpret digoxin immunoassay results with timing, specimen validity, and institutional therapeutic-range verification.
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Lithium . Chemistry
Interpret lithium levels with trough timing, tube-type pitfalls (avoid lithium-heparin), and institutional range verification.
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Valproic Acid . Chemistry
Interpret valproate concentrations with free-versus-total concepts when relevant and institutional therapeutic-range framing.
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Phenytoin . Chemistry
Interpret phenytoin with timing, protein-binding/albumin context when used, and institutional range verification.
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Toxicology Screening . Chemistry
Distinguish immunoassay screening from confirmatory testing, including cutoffs as method-defined and limitations of screen-only results.
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Alcohol . Chemistry
Interpret ethanol (and related volatile) laboratory testing with specimen handling and clinical-versus-forensic reporting awareness.
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Drugs of Abuse . Chemistry
Interpret urine drugs-of-abuse immunoassay panels with common cross-reactivity, adulteration, and confirmation pathways.
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Laboratory Interpretation . Chemistry
Integrate TDM timing, institutional therapeutic ranges, and toxicology screen/confirm logic into release-ready interpretation.
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Clinical Cases . Chemistry
Apply Module 13 concepts to case-based TDM and toxicology laboratory scenarios from order to report.
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