A-Z Investigations Directory
255 Published Clinical Investigation Modules
A31 modules
pulmonologynumeric
A-a Gradient and PaO2/FiO2 Ratio in Hypoxemia
15 minRead Guide →
radiologyimaging
Abdominal X-Ray: SBO vs LBO, Volvulus, Pneumoperitoneum, and Rigler Sign
25 minRead Guide →
specializedpanel
Acetaminophen Toxicity: Rumack-Matthew Nomogram and NAC Timing
20 minRead Guide →
pulmonologypanel
Acid-Base Compensation: Winter's Formula and Acute vs Chronic Rules
20 minRead Guide →
coagulationimaging
ADAMTS13 Activity and Inhibitor Titers
15 minRead Guide →
pediatricspanel
Age-Specific Reference Intervals: Neonatal High Hb, Infant Lymphocytosis, and Physiologic Anemia
20 minRead Guide →
endocrinologynumeric
Aldosterone-Renin Ratio (ARR): Medication Washout and Confirmatory Testing
20 minRead Guide →
gastroenterologypanel
ALP Isoenzymes and Infiltrative Hepatic Patterns
15 minRead Guide →
oncologypanel
Alpha-Fetoprotein (AFP) as a Tumor Marker
15 minRead Guide →
cardiologywaveform
Ambulatory Holter ECG Monitoring (24-48h)
20 minRead Guide →
pharmacologynumeric
Aminoglycoside Peak/Trough Monitoring & Nomograms
20 minRead Guide →
rheumatologypanel
ANCA Serology Panel (c-ANCA/PR3, p-ANCA/MPO)
20 minRead Guide →
rheumatologypanel
ANCA Vasculitis: PR3-ANCA (c-ANCA) vs MPO-ANCA (p-ANCA)
20 minRead Guide →
pediatricsimaging
Anemia in the Elderly: Unexplained Anemia of Aging, Clonal Cytopenias, and Drug Interactions
20 minRead Guide →
rheumatologypanel
Anti-Cyclic Citrullinated Peptide (Anti-CCP)
15 minRead Guide →
nephrologypanel
Anti-Glomerular Basement Membrane (Anti-GBM) Antibody
20 minRead Guide →
obstetricspanel
Anti-Müllerian Hormone (AMH) Ovarian Reserve Testing
15 minRead Guide →
nephrologypanel
Anti-Phospholipase A2 Receptor (Anti-PLA2R) in Membranous Nephropathy
20 minRead Guide →
coagulationimaging
Anti-Xa Monitoring for LMWH, Unfractionated Heparin, and DOACs
15 minRead Guide →
microbiologypanel
Antimicrobial Susceptibility Testing: MIC Breakpoints, PK/PD Indices, and Multi-Drug Resistant Phenotypes
25 minRead Guide →
rheumatologypanel
Antinuclear Antibodies by Indirect Immunofluorescence (ANA-IIF): Titers, ICAP Staining Patterns, and Clinical Subsets
25 minRead Guide →
coagulationpanel
Antiphospholipid Syndrome Panel (Lupus Anticoagulant, aCL, anti-B2GPI)
20 minRead Guide →
pulmonologypanel
Arterial Blood Gas (ABG) and Acid-Base Analysis
30 minRead Guide →
critical-carewaveform
Arterial Line Waveforms: Overdamping vs Underdamping and Pulse Pressure Variation (PPV)
25 minRead Guide →
clinical-pathologyfluid
Ascitic Fluid Analysis (SAAG & SBP Evaluation)
20 minRead Guide →
clinical-pathologyfluid
Ascitic Fluid: Serum-Ascites Albumin Gradient (SAAG) and SBP Neutrophil Count (>= 250/mm3)
20 minRead Guide →
neurologypanel
Autoimmune Encephalitis Panel: Anti-NMDAR, LGI1, CASPR2, and Paraneoplastic Antibodies
20 minRead Guide →
neurologyfluid
Autoimmune Encephalitis Serology and CSF Panel
25 minRead Guide →
gastroenterologypanel
Autoimmune Liver Screen (ANA, ASMA, anti-LKM1, AMA, IgG, IgM)
20 minRead Guide →
gastroenterologypanel
Autoimmune Liver Serology Panel (ASMA, Anti-LKM1, SLA)
25 minRead Guide →
cardiologypanel
AV Nodal Blocks: 1st Degree, Mobitz I, Mobitz II, and 3rd Degree Complete Block
20 minRead Guide →
B8 modules
radiologyimaging
Bedside Ultrasound: FAST and eFAST in Blunt Trauma and Pleural Assessment
25 minRead Guide →
microbiologypanel
Blood Cultures: Sampling Protocol, Contaminant Identification, and Time to Positivity
25 minRead Guide →
specializednumeric
Blood Ethanol Concentration & Elimination Kinetics
15 minRead Guide →
cardiologypanel
BNP and NT-proBNP: Heart Failure Cutoffs and Renal/Obesity Adjustments
20 minRead Guide →
hematologypanel
Bone Marrow Aspirate & Trephine Biopsy
30 minRead Guide →
hematologypanel
Bone Marrow Aspirate, Trephine, and Iron Stain
25 minRead Guide →
radiologyimaging
Brain MRI in Acute Ischemic Stroke (DWI, ADC, FLAIR)
25 minRead Guide →
cardiologypanel
Bundle Branch Blocks (LBBB, RBBB, Sgarbossa Criteria, and Fascicular Blocks)
20 minRead Guide →
C33 modules
endocrinologypanel
C-Peptide, Insulin, and HOMA-IR in Hypoglycemia and Diabetes Subtyping
15 minRead Guide →
gastroenterologypanel
C. difficile Diagnostic Algorithm (GDH, Toxin A/B, NAAT)
20 minRead Guide →
oncologypanel
CA-125, Beta-hCG, and LDH in Ovarian Malignancy and Germ Cell Tumors
20 minRead Guide →
pharmacologypanel
Calcineurin Inhibitors: Tacrolimus and Cyclosporine Whole Blood Troughs
15 minRead Guide →
nephrologyimaging
Calcium (Ionized & Corrected), Phosphate, and Magnesium
20 minRead Guide →
cardiologyimaging
Cardiac MRI & Late Gadolinium Enhancement (LGE)
30 minRead Guide →
obstetricsimaging
Cardiotocography (CTG): Baseline Rate, Variability, Accelerations, and Decelerations
25 minRead Guide →
gastroenterologypanel
Celiac Disease Serology (tTG-IgA, EMA, Total Serum IgA)
20 minRead Guide →
critical-careimaging
Central Venous Oxygen Saturation (ScvO2) & Lactate Clearance
20 minRead Guide →
critical-carewaveform
Central Venous Pressure (CVP) Waveforms and Central Venous Oxygen Saturation (ScvO2)
20 minRead Guide →
clinical-pathologyfluid
Cerebrospinal Fluid (CSF) Analysis & Lumbar Puncture
25 minRead Guide →
cardiologypanel
Channelopathies: Brugada Syndromes (Types 1-3), WPW Pre-Excitation, and Long QT
20 minRead Guide →
radiologyimaging
Chest Radiograph (CXR): Systematic Interpretation
30 minRead Guide →
nephrologyimaging
CKD-MBD: Intact PTH Targets, Calcium-Phosphate Product, and FGF-23
20 minRead Guide →
rheumatologyimaging
Clinical HLA Typing: B27, B51, DQ2/DQ8, B*57:01, and B*15:02
20 minRead Guide →
microbiologypanel
Clostridioides difficile Toxin A/B EIA & NAAT
20 minRead Guide →
pulmonologypanel
Co-Oximetry Panel (COHb, MetHb, SulfHb)
20 minRead Guide →
pulmonologypanel
Co-Oximetry: Carboxyhemoglobin, Methemoglobin, and Sulfhemoglobin
15 minRead Guide →
coagulationpanel
Coagulation Profile (PT/INR, aPTT, Fibrinogen, and D-Dimer)
30 minRead Guide →
cardiologywaveform
Common ECG Abnormalities and STEMI Equivalents
30 minRead Guide →
rheumatologypanel
Complement Profiles: C3, C4, and CH50 Consumption Patterns in SLE and Nephritis
15 minRead Guide →
hematologynumeric
Complete Blood Count (CBC) and Indices
25 minRead Guide →
radiologyimaging
Contrast CT Abdomen & Pelvis: Arterial, Portal Venous, and Delayed Excretory Phases
25 minRead Guide →
radiologyimaging
Contrast-Enhanced Abdominal and Pelvic CT Phases
25 minRead Guide →
cardiologyimaging
Coronary Calcium Score, CAD-RADS, and Cardiac MRI Late Gadolinium Patterns
25 minRead Guide →
cardiologyimaging
Coronary CT Angiography & Calcium Score (CAD-RADS)
25 minRead Guide →
rheumatologyimaging
Cryoglobulins (Types I, II, III): Strict 37°C Specimen Handling and Hepatitis C Association
15 minRead Guide →
clinical-pathologyimaging
CSF Analysis: Opening Pressure, Cell Count, Traumatic Tap Correction, Protein, and Glucose Ratio
25 minRead Guide →
neurologyfluid
CSF Oligoclonal Bands & IgG Index
25 minRead Guide →
clinical-pathologyimaging
CSF Profiles in Bacterial, Viral, Fungal, and Tubercular Meningitis
20 minRead Guide →
clinical-pathologyimaging
CSF Xanthochromia and Spectrophotometry in Subarachnoid Hemorrhage
15 minRead Guide →
radiologyimaging
CXR Patterns: Consolidation, Atelectasis, Pleural Effusion, and Pneumothorax
25 minRead Guide →
nephrologypanel
Cystatin C and Combined Creatinine-Cystatin eGFR
15 minRead Guide →
D11 modules
coagulationimaging
D-Dimer and Fibrin Degradation Products
15 minRead Guide →
microbiologypanel
Dengue: NS1 Antigen vs IgM/IgG Timeline and Warning Signs Correlation
15 minRead Guide →
endocrinologypanel
Dexamethasone Suppression Tests (Low-Dose & High-Dose)
25 minRead Guide →
educationpanel
Diagnostic Investigation Panel in Unexplained Coma
30 minRead Guide →
cardiologyimaging
Diastolic Function Grading: E/A, e prime, E/e prime, LA Volume, and TR Velocity
25 minRead Guide →
coagulationpanel
DIC vs TTP/HUS vs HIT (4Ts score, PF4 antibodies)
25 minRead Guide →
pulmonologypanel
Diffusing Capacity (DLCO and KCO) Differentials
20 minRead Guide →
pulmonologypanel
Diffusing Capacity of the Lungs for Carbon Monoxide (DLCO)
20 minRead Guide →
pharmacologynumeric
Digoxin Levels: Target Troughs (0.5-0.9 ng/mL), Toxicity Signs, and Hypokalemia Potentiation
20 minRead Guide →
pharmacologynumeric
Digoxin Serum Concentration & Toxicity Monitoring
20 minRead Guide →
hematologyimaging
Direct Antiglobulin Test (DAT / Coombs)
15 minRead Guide →
E13 modules
specializedwaveform
EEG Basics: Normal Background Rhythms, Epileptiform Spikes, and Triphasic Waves
25 minRead Guide →
neurologyimaging
EEG in Clinical Practice: Generalized vs Focal Spikes, Status Epilepticus, and Encephalopathy
25 minRead Guide →
nephrologypanel
eGFR: CKD-EPI 2021 Race-Free Equation vs Cockcroft-Gault
20 minRead Guide →
neurologyimaging
Electroencephalography (EEG) in Seizures and Status Epilepticus
25 minRead Guide →
critical-carewaveform
End-Tidal CO2 (EtCO2) Waveform Capnography
25 minRead Guide →
microbiologypanel
Enteric Fever: Blood Culture vs Widal Test Pitfalls and Typhidot
15 minRead Guide →
hematologypanel
ESR vs CRP Kinetics
15 minRead Guide →
educationpanel
Exam Drill: Normocytic Anemia with Elevated Creatinine and Calcium Disturbances
25 minRead Guide →
educationpanel
Exam Drill: Severe Hyponatremia with Low Urine Sodium and Altered Mental Status
25 minRead Guide →
educationpanel
Exam Drill: Triple Acid-Base Disturbance (HAGMA, Metabolic Alkalosis, Respiratory Acidosis)
30 minRead Guide →
cardiologyimaging
Exercise Stress Electrocardiography (TMT / Bruce Protocol)
25 minRead Guide →
radiologyimaging
Extended FAST (eFAST) Point-of-Care Ultrasound
20 minRead Guide →
rheumatologypanel
Extractable Nuclear Antigens (ENA) Profile and Anti-dsDNA: Antibody Specificities and Disease Monitoring
25 minRead Guide →
F13 modules
coagulationimaging
Factor VIII and von Willebrand Factor Panel
20 minRead Guide →
gastroenterologyimaging
Fecal Calprotectin for Mucosal Inflammation
15 minRead Guide →
gastroenterologyimaging
Fecal Calprotectin, Fecal Elastase, and FIT / Occult Blood
15 minRead Guide →
gastroenterologypanel
Fecal Immunochemical Test (FIT) for Hemoglobin
15 minRead Guide →
nephrologyimaging
FENa, FEurea, and Urine Electrolytes in Acute Kidney Injury
15 minRead Guide →
educationimaging
First-Hour Sepsis Diagnostic & Lactate Bundle
25 minRead Guide →
obstetricspanel
First-Trimester Combined Aneuploidy Screening
25 minRead Guide →
obstetricspanel
First-Trimester Combined Screen, Quad Screen, and Cell-Free DNA (NIPT)
20 minRead Guide →
hematologypanel
Flow Cytometry in Leukemia and Lymphoma
20 minRead Guide →
pulmonologyimaging
Flow-Volume Loops: Fixed vs Variable Upper Airway Obstruction
20 minRead Guide →
nephrologyimaging
Fractional Excretion of Urea (FEUrea)
15 minRead Guide →
pulmonologyimaging
Fractional Exhaled Nitric Oxide (FeNO)
15 minRead Guide →
microbiologyimaging
Fungal Biomarkers: Galactomannan, Beta-D-Glucan, and Cryptococcal Antigen
20 minRead Guide →
G9 modules
hematologypanel
G6PD Quantitative Assay
15 minRead Guide →
hematologypanel
G6PD Quantitative Enzyme Assay
20 minRead Guide →
oncologypanel
Gastrointestinal Markers: CEA, CA 19-9, and Alpha-Fetoprotein (AFP)
20 minRead Guide →
microbiologypanel
GeneXpert MTB/RIF Cartridge Real-Time PCR
20 minRead Guide →
pharmacologypanel
Gentamicin and Amikacin: Extended-Interval Nomograms and Trough Safety
20 minRead Guide →
pediatricspanel
Geriatric Renal Assessment: Sarcopenia, Serum Creatinine Blunting, and Cystatin C Superiority
20 minRead Guide →
endocrinologynumeric
Glycemic Testing: Fasting Plasma Glucose, HbA1c Pitfalls, and Oral Glucose Tolerance Test (OGTT)
25 minRead Guide →
endocrinologypanel
Gonadal Axis: LH, FSH, Estradiol, Total/Free Testosterone, and SHBG
20 minRead Guide →
microbiologypanel
Gram Stain Morphology and Sputum Bartlett Quality Scoring
15 minRead Guide →
H16 modules
gastroenterologypanel
H. pylori Diagnostics: Urea Breath Test, Stool Antigen, and Serology
15 minRead Guide →
specializedpanel
Heavy Metal Toxicity Blood Panel (Lead, Arsenic, Mercury)
20 minRead Guide →
gastroenterologypanel
Hemochromatosis: Ferritin, TSAT, and HFE Genotyping
15 minRead Guide →
nephrologyimaging
Hemodialysis Adequacy: Single-Pool Kt/V, Urea Reduction Ratio (URR), and Peritoneal Equivalence
20 minRead Guide →
hematologyimaging
Hemoglobin Electrophoresis & HPLC (HbA2, HbF quantitation)
20 minRead Guide →
hematologyimaging
Hemolysis Work-up (LDH, Haptoglobin, Indirect Bilirubin, Hemosiderin)
20 minRead Guide →
coagulationpanel
Heparin-Induced Thrombocytopenia (HIT) Anti-PF4 Assay
20 minRead Guide →
microbiologypanel
Hepatitis B Complete Serological Panel
25 minRead Guide →
gastroenterologyimaging
Hepatocellular vs Cholestatic Patterns and the R-Factor
15 minRead Guide →
pharmacologynumeric
High-Dose Methotrexate Level & Leucovorin Rescue
20 minRead Guide →
radiologyimaging
High-Resolution Chest CT (HRCT) Patterns
25 minRead Guide →
radiologyimaging
High-Resolution Chest CT: UIP vs NSIP, Ground Glass, Tree-in-Bud, and CTPA
25 minRead Guide →
cardiologynumeric
High-Sensitivity Cardiac Troponins (hs-cTnI and hs-cTnT)
25 minRead Guide →
microbiologypanel
HIV 4th-Gen Combo Ag/Ab & Viral Load PCR
25 minRead Guide →
microbiologynumeric
HIV 4th-Generation Ag/Ab Assay, Viral Load Quantitation, and CD4 Count
20 minRead Guide →
endocrinologypanel
Hypothalamic-Pituitary-Adrenal (HPA) Axis: Morning Cortisol, ACTH, Synacthen Stimulation, and Dexamethasone Suppression
25 minRead Guide →
I11 modules
endocrinologypanel
IGF-1 and Growth Hormone Oral Glucose Suppression Test
15 minRead Guide →
oncologyimaging
Immunofixation (IFE): Heavy and Light Chain Isotyping
15 minRead Guide →
oncologypanel
Immunohistochemistry (IHC): CK7/CK20, TTF-1, CDX2, CD45, S100, and ER/PR/HER2
25 minRead Guide →
microbiologyimaging
Inflammatory Kinetics: CRP vs Procalcitonin vs ESR in Bacterial Infection
20 minRead Guide →
rheumatologypanel
Inflammatory Markers (CRP, High-Sensitivity CRP, ESR, and Procalcitonin)
25 minRead Guide →
coagulationimaging
Inherited Thrombophilia Screen (Factor V Leiden, Prothrombin 20210A, Protein C/S, Antithrombin)
20 minRead Guide →
educationwaveform
Integrated Invasive Hemodynamic Profiling in Shock
30 minRead Guide →
critical-carewaveform
Intracranial Pressure (ICP) Monitoring: P1, P2, and P3 Waveform Morphology
20 minRead Guide →
coagulationimaging
Intrinsic and Extrinsic Factor Assays
20 minRead Guide →
critical-carewaveform
Invasive Arterial Line Waveform & Pulse Pressure Variation
25 minRead Guide →
hematologypanel
Iron Studies and Serum Ferritin
25 minRead Guide →
K1 module
L4 modules
endocrinologypanel
Lipid Profile, ApoB, and Lipoprotein(a) [Lp(a)] Risk Stratification
20 minRead Guide →
pharmacologynumeric
Lithium Levels: 12-Hour Standardized Trough (0.6-1.0 mmol/L) and Neurotoxicity
20 minRead Guide →
hepatologypanel
Liver Function Tests (LFT) and Hepatic Enzymes
30 minRead Guide →
coagulationpanel
Lupus Anticoagulant & Antiphospholipid Panel
25 minRead Guide →
M9 modules
microbiologypanel
Malaria: Thick & Thin Blood Smear Parasitemia and RDT (HRP2 vs pLDH)
20 minRead Guide →
educationpanel
Massive Pulmonary Embolism Multi-Modal Workup
30 minRead Guide →
obstetricsimaging
Maternal Rh Isoimmunization, Indirect Coombs Titer, and Kleihauer-Betke Test
20 minRead Guide →
hematologynumeric
Mentzer Index & Anisocytosis Evaluation
15 minRead Guide →
coagulationimaging
Mixing Studies (Correction vs Inhibitors)
20 minRead Guide →
hematologypanel
Molecular Hematology (JAK2 V617F, BCR-ABL1, CALR, MPL)
20 minRead Guide →
oncologypanel
Molecular Oncology: EGFR, ALK, ROS1, BRAF, KRAS, PD-L1, and MSI/MMR
25 minRead Guide →
radiologyimaging
MRI Sequences: T1, T2, FLAIR, DWI/ADC Diffusion Restriction, and MRCP
25 minRead Guide →
neurologypanel
Myasthenia Gravis Serology: Anti-AChR, Anti-MuSK, and Anti-LRP4 Antibodies
15 minRead Guide →
N9 modules
neurologyimaging
NCS and Needle EMG: Demyelinating (GBS, CIDP) vs Axonal Neuropathy and Myopathy
25 minRead Guide →
pediatricspanel
Neonatal Hyperbilirubinemia & Bhutani Nomogram
20 minRead Guide →
obstetricsimaging
Neonatal Hyperbilirubinemia: Bhutani Nomogram, Phototherapy Thresholds, and Direct Fraction
20 minRead Guide →
neurologyimaging
Neuromuscular Junction Studies: Repetitive Nerve Stimulation and Single-Fiber EMG in Myasthenia
20 minRead Guide →
obstetricspanel
Newborn Blood Spot Screening: Congenital Hypothyroidism, PKU, and Hemoglobinopathies
15 minRead Guide →
pediatricspanel
Newborn Dried Bloodspot Metabolic Screening
20 minRead Guide →
radiologyimaging
Non-Contrast Computed Tomography (NCCT) Brain
25 minRead Guide →
radiologyimaging
Non-Contrast CT Brain: Hemorrhage Densities by Age, Early Ischemia, and Midline Shift
25 minRead Guide →
gastroenterologypanel
Non-Invasive Fibrosis Scores: FIB-4, APRI, and NAFLD Fibrosis Score
15 minRead Guide →
O2 modules
P20 modules
pediatricspanel
Pediatric Alkaline Phosphatase Surges in Pubertal Growth and Bone-Age Radiography
15 minRead Guide →
pediatricspanel
Pediatric Capillary Blood Gas Interpretation
20 minRead Guide →
cardiologywaveform
Pericardial Effusion, Tamponade Hemodynamics, and JVP Waveform Correlation
20 minRead Guide →
clinical-pathologyfluid
Pericardial Fluid Analysis & Tamponade Cytology
20 minRead Guide →
hematologypanel
Peripheral Blood Film (PBF) Morphology
30 minRead Guide →
pharmacologypanel
Phenytoin (Total vs Free Sheiner-Tozer), Valproic Acid, and Carbamazepine
20 minRead Guide →
endocrinologyimaging
Plasma Adrenocorticotropic Hormone (ACTH)
20 minRead Guide →
endocrinologyimaging
Plasma and 24-Hour Urinary Fractionated Metanephrines for Pheochromocytoma
20 minRead Guide →
endocrinologypanel
Plasma Free Metanephrines & Normetanephrines
20 minRead Guide →
clinical-pathologyfluid
Pleural Fluid Analysis: Light's Criteria (Transudate vs Exudate), pH, ADA, and Amylase
20 minRead Guide →
hematologypanel
PNH Flow Cytometry (CD55, CD59, FLAER)
15 minRead Guide →
critical-careimaging
Point-of-Care Lung Ultrasound (BLUE Protocol)
25 minRead Guide →
pulmonologypanel
Polysomnography & Sleep Study Parameters (AHI, ODI)
25 minRead Guide →
nephrologywaveform
Potassium Disorders: Acid-Base Shifts, ECG Correlation, and TTKG
25 minRead Guide →
obstetricsnumeric
Preeclampsia Laboratory Profiling and the sFlt-1/PlGF Biomarker Ratio
15 minRead Guide →
endocrinologyimaging
Prolactin, Macroprolactin, and the High-Dose Hook Effect
15 minRead Guide →
oncologynumeric
Prostate-Specific Antigen (PSA): Total PSA, Free/Total Ratio, PSA Kinetics, and Age-Adjusted Thresholds
20 minRead Guide →
gastroenterologyimaging
PT/INR and Albumin as Synthetic Function Markers in Cirrhosis
15 minRead Guide →
endocrinologypanel
PTH, 25-OH Vitamin D, 1,25-OH Vitamin D, and Calcitonin
20 minRead Guide →
cardiologyimaging
Pulmonary Embolism Signs (S1Q3T3) and Electrolyte ECG Patterns (K, Ca, Mg)
20 minRead Guide →
R11 modules
educationimaging
Rapid ECG Vignettes: Conduction Blocks, Sgarbossa, and Channelopathies
30 minRead Guide →
educationimaging
Rapid Imaging Reads: Pneumothorax, Aortic Dissection, and Early Intracranial Hemorrhage
30 minRead Guide →
nephrologypanel
Renal Allograft Monitoring: Donor-Specific Antibodies, BK Virus PCR, and Calcineurin Nephrotoxicity
20 minRead Guide →
nephrologyimaging
Renal Biopsy Interpretation: Light Microscopy, Immunofluorescence, and Electron Microscopy
25 minRead Guide →
nephrologyimaging
Renal Biopsy Interpretation: Light, IF, and Electron Microscopy
30 minRead Guide →
nephrologypanel
Renal Function Tests (RFT) and eGFR
25 minRead Guide →
nephrologynumeric
Renal Transplant Monitoring: Tacrolimus Trough & DSA
25 minRead Guide →
nephrologynumeric
Renal Tubular Acidosis (Types 1, 2, 4) & Urine Anion Gap
25 minRead Guide →
hematologynumeric
Reticulocyte Count and Reticulocyte Production Index (RPI): Corrected Count and Erythropoietic Dynamics
20 minRead Guide →
rheumatologyimaging
Rheumatoid Factor vs Anti-CCP in Inflammatory Arthritis
15 minRead Guide →
nephrologypanel
Routine Urinalysis and Microscopic Examination
25 minRead Guide →
S29 modules
specializedpanel
Salicylate Toxicity: Mixed Respiratory Alkalosis and Metabolic Acidosis
15 minRead Guide →
obstetricspanel
Second-Trimester Maternal Serum Quad Screen
20 minRead Guide →
obstetricspanel
Semen Analysis (WHO 6th Edition Criteria)
20 minRead Guide →
critical-carepanel
Sequential Organ Failure Assessment (SOFA) Score and Sepsis Biomarkers
15 minRead Guide →
nephrologypanel
Serologic Workup in Glomerulonephritis: Anti-PLA2R, Anti-GBM, and Complement Consumption
25 minRead Guide →
clinical-pathologyfluid
Serous Fluids Analysis: Pleural, Ascitic & Synovial
30 minRead Guide →
nephrologynumeric
Serum & Urine Osmolality and the Osmolar Gap
20 minRead Guide →
gastroenterologypanel
Serum Amylase vs Lipase in Acute Pancreatitis
15 minRead Guide →
oncologyimaging
Serum and Urine Protein Electrophoresis (SPEP/UPEP)
25 minRead Guide →
nephrologypanel
Serum and Urine Uric Acid
15 minRead Guide →
pulmonologyimaging
Serum Anion Gap (Albumin-Corrected) and Delta-Delta Ratio
20 minRead Guide →
oncologypanel
Serum Beta-2 Microglobulin (B2M)
15 minRead Guide →
gastroenterologypanel
Serum Ceruloplasmin & Wilson Disease Workup
20 minRead Guide →
nephrologypanel
Serum Electrolytes (Sodium, Potassium, Chloride, Bicarbonate)
30 minRead Guide →
oncologynumeric
Serum Free Light Chains (sFLC): Kappa/Lambda Ratio in Myeloma vs Renal Failure
20 minRead Guide →
rheumatologypanel
Serum IgG4 and Subclasses in IgG4-Related Disease
15 minRead Guide →
pulmonologyimaging
Serum Lactate Kinetics (Type A vs Type B Lactic Acidosis)
15 minRead Guide →
specializednumeric
Serum Osmolality & Osmolar Gap Determination
20 minRead Guide →
oncologypanel
Serum Protein Electrophoresis (SPEP): 5 Albumin/Globulin Zones, M-Spike Identification, and Immunofixation
25 minRead Guide →
pulmonologypanel
Sleep Study Parameters: AHI, ODI, and Hypopnea Scoring
15 minRead Guide →
nephrologypanel
Sodium Disorders: Diagnostic Algorithms for Hypo- and Hypernatremia
25 minRead Guide →
pulmonologyimaging
Spirometry: Obstructive vs Restrictive Patterns & Reversibility
25 minRead Guide →
cardiologypanel
STEMI Localization, Culprit Vessel Identification, and Posterior/RV Leads
25 minRead Guide →
cardiologypanel
STEMI Mimics: Acute Pericarditis, Benign Early Repol, LV Aneurysm, Takotsubo
20 minRead Guide →
pulmonologypanel
Stewart Approach Basics: Strong Ion Difference (SID) and ATOT
20 minRead Guide →
pediatricspanel
Sweat Chloride Test for Cystic Fibrosis
15 minRead Guide →
clinical-pathologyfluid
Synovial Fluid: Cell Count and Polarized Light Microscopy (Monosodium Urate vs CPPD Crystals)
20 minRead Guide →
microbiologyfluid
Syphilis Serology: Traditional vs Reverse Screening Algorithm and CSF VDRL
20 minRead Guide →
cardiologywaveform
Systematic 12-Lead Electrocardiogram (ECG) Interpretation
30 minRead Guide →
T6 modules
coagulationwaveform
Thromboelastography (TEG) and ROTEM
25 minRead Guide →
endocrinologypanel
Thyroid Function Tests (TSH, Free T4, and Free T3)
25 minRead Guide →
rheumatologypanel
Total Serum IgE & Allergen-Specific IgE
15 minRead Guide →
specializedimaging
Transfusion Medicine: Type & Screen, Crossmatch, and Acute Transfusion Reaction Workup
20 minRead Guide →
cardiologyimaging
Transthoracic Echocardiography (TTE) Fundamentals
30 minRead Guide →
microbiologypanel
Tuberculosis Diagnostics: AFB Smear, GeneXpert MTB/RIF Ultra, Culture, and IGRA vs TST
25 minRead Guide →
U7 modules
nephrologynumeric
Urine Albumin-to-Creatinine Ratio (uACR)
15 minRead Guide →
microbiologyimaging
Urine Culture: Asymptomatic Bacteriuria vs True UTI and Colony Thresholds
15 minRead Guide →
specializedimaging
Urine Drug Screen Immunoassays: Immunoassay Cross-Reactivity and False Positives
15 minRead Guide →
nephrologyimaging
Urine Electrolytes & Osmolality Panel
20 minRead Guide →
nephrologynumeric
Urine Protein and Albumin Quantification (ACR and PCR)
25 minRead Guide →
nephrologyimaging
Urine Protein Quantification: ACR vs PCR and 24-Hour Collection
20 minRead Guide →
specializedpanel
Urine Toxicology Drug Screen Panel & Confirmatory Testing
20 minRead Guide →
V8 modules
pharmacologynumeric
Vancomycin AUC24/MIC and Trough Monitoring
20 minRead Guide →
pharmacologypanel
Vancomycin: AUC24/MIC Guidance (400-600) vs Traditional Trough Monitoring
20 minRead Guide →
pulmonologyimaging
VBG vs ABG in Clinical Practice: Correlation & Caveats
15 minRead Guide →
critical-carewaveform
Ventilator Waveforms: Flow-Time and Pressure-Volume Loops, Auto-PEEP, and Dyssynchrony
25 minRead Guide →
gastroenterologypanel
Viral Hepatitis Serology (HAV, HBV Panel & DNA, HCV RNA, HDV, HEV)
25 minRead Guide →
coagulationpanel
Viscoelastic Testing: TEG and ROTEM Interpretation
20 minRead Guide →
hematologypanel
Vitamin B12, Folate, MMA, and Homocysteine
20 minRead Guide →
coagulationimaging
von Willebrand Panel (vWF Antigen, Activity, Factor VIII)
20 minRead Guide →