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Practice Questions100 questions

2026 Statistics

Key Facts: TEPAC Patologia Clínica Exam

60 MCQs + 10 Practical

Structure of Theoretical and Theoretical-Practical Exam Phases

Edital TEPAC — SBPC/ML / AMB

4 Phases

Evaluation Stages: Theoretical, Theoretical-Practical, Oral Board, Curricular

Edital TEPAC — SBPC/ML / AMB

70% (7.0 / 10.0)

Minimum Passing Grade Benchmark Across Evaluation Phases

Regulamento Oficial TEPAC — SBPC/ML

RQE Patologia Clínica

Specialist Registration Credential Conferred with CFM

Conselho Federal de Medicina (CFM) / AMB

Annual

Official Examination Frequency Conducted by SBPC/ML

Sociedade Brasileira de Patologia Clínica/Medicina Laboratorial

PALC & RDC 786/2023

Core Laboratory Accreditation & Brazilian Regulatory Frameworks

SBPC/ML & ANVISA

The TEPAC is the premier Brazilian board certification in Clinical Pathology and Laboratory Medicine administered by SBPC/ML and AMB. It evaluates clinical pathologists across laboratory governance, quality assurance, analytical methods, clinical biochemistry, hematology, microbiology (BrCAST), immunology, body fluids, and molecular pathology.

Sample TEPAC Patologia Clínica Practice Questions

Try these sample questions to test your TEPAC Patologia Clínica exam readiness. Each question includes a detailed explanation. Start the interactive quiz above for the full 100+ question experience with AI tutoring.

1During the daily internal quality control (CIQ) review for serum potassium on an automated chemistry analyzer, the clinical pathologist observes that the control value for Level 1 is +3.2 standard deviations (+3.2s) above the established mean, while Level 2 is at +0.4s. The previous 20 consecutive runs for both levels were within ±1.5s. According to the Westgard multi-rule algorithm, which rule has been violated and what immediate laboratory action is required?

A.Violation of rule 1:3s; this is a rejection rule indicating random error (or severe systematic error), requiring rejection of the analytical run and troubleshooting before patient testing.

B.Violation of rule 1:2s; this is a warning rule only, so patient results can be reported while monitoring the next run.

C.Violation of rule 2:2s; this is a rejection rule indicating systematic error across two consecutive runs, requiring immediate recalibration.

D.Violation of rule R:4s; this is a rejection rule indicating random error across different control levels within the same run.

Explanation: A single control measurement exceeding ±3 standard deviations from the target mean triggers the Westgard 1:3s rejection rule. This rule is highly sensitive to random analytical errors (such as pipetting inaccuracies, air bubbles, or electrical surges) and severe systematic shifts, requiring immediate cessation of patient testing, rejection of the analytical run, root cause investigation, and corrective action before repeating quality control.

2A clinical laboratory tracks daily internal quality control data for serum alanine aminotransferase (ALT) on a Levey-Jennings chart. Over the past two consecutive days, Level 1 control measured +2.4s and +2.3s, and Level 2 control measured +2.2s and +2.5s. Which Westgard rule is violated, and what type of analytical error does it indicate?

A.Rule 1:3s indicating random error.

B.Rule 2:2s indicating systematic error.

C.Rule R:4s indicating random error.

D.Rule 10:x indicating random drift.

Explanation: The Westgard 2:2s rule is violated when two consecutive control observations (either across two consecutive runs of the same control material or both control levels within the same run) exceed the same +2s or -2s limit. This rule specifically detects systematic error (bias or calibration drift), mandating rejection of the run and inspection of reagent lot changes, calibrator values, or light source degradation.

3In a routine analytical run for serum creatinine, Level 1 quality control yields a value of +2.2s above the mean, while Level 2 quality control in the same run yields -2.1s below the mean. Which Westgard multi-rule rejection threshold has been breached, and what is its primary diagnostic significance?

A.Rule 2:2s, which detects systematic analytical bias.

B.Rule 4:1s, which detects systematic calibration shift.

C.Rule R:4s, which detects random analytical error.

D.Rule 1:3s, which detects photometric lamp failure.

Explanation: The Westgard R:4s rule is violated when one control measurement exceeds +2s and another control measurement in the same analytical run exceeds -2s, creating a total span or range (R) equal to or greater than 4 standard deviations (+2.2s - (-2.1s) = 4.3s). This rule is exclusively sensitive to random analytical error such as bubble interference, sudden fluidic instability, or pipetting imprecision.

4While monitoring the Levey-Jennings chart for blood urea nitrogen (BUN), a clinical pathologist identifies four consecutive analytical runs where the control results are situated at +1.3s, +1.4s, +1.2s, and +1.6s on the same side of the mean. No individual point exceeds 2s. What Westgard rule is triggered, and what underlying analytical problem should be investigated?

A.Rule 1:2s warning rule, requiring immediate patient sample dilution.

B.Rule 1:3s rejection rule, indicating mechanical aspiration failure.

C.Rule R:4s rejection rule, indicating increased random measurement imprecision.

D.Rule 4:1s rejection rule, indicating systematic error such as calibrator degradation or reagent evaporation.

Explanation: The Westgard 4:1s rule is breached when four consecutive control observations exceed +1s or -1s on the same side of the target mean. This is a systematic error rule that detects subtle analytical bias, calibration shifts, reagent lot deterioration, or evaporation before more severe errors (such as 2:2s or 1:3s) occur.

5A clinical laboratory calculates the analytical performance metrics for its automated serum glucose assay. The established Total Allowable Error (TEa) according to biological variation is 6.0%. Analytical validation demonstrates an analytical bias (systematic error) of 1.2% and a coefficient of variation (CV%, random error) of 0.8%. What is the calculated Six Sigma (σ) metric for this assay, and how is its world-class performance classified?

A.Sigma = 6.0 (World-class Six Sigma performance)

B.Sigma = 4.8 (Good performance)

C.Sigma = 3.5 (Marginal performance)

D.Sigma = 7.5 (World-class Six Sigma performance)

Explanation: The Six Sigma metric is calculated using the formula: Sigma (σ) = (%TEa - %Bias) / %CV. Substituting the values: Sigma = (6.0 - 1.2) / 0.8 = 4.8 / 0.8 = 6.0. An assay achieving a Sigma metric of 6.0 or higher is classified as 'World-Class' quality, allowing the laboratory to implement simplified QC rules (e.g., single rule 1:3s with low false rejection rates).

6According to the Technical Recommendations of the Brazilian Society of Clinical Pathology / Laboratory Medicine (SBPC/ML) and CLSI GP41 standards, what is the mandatory sequence of tube collection (order of draw) during vacuum venipuncture to prevent additive cross-contamination?

A.EDTA (lavender) -> Sodium citrate (light blue) -> Blood culture bottles -> Serum tubes (red/gold) -> Heparin (green) -> Sodium fluoride (gray).

B.Blood culture bottles -> Sodium citrate (light blue) -> Serum tubes with/without clot activator or gel (red/gold) -> Heparin (green) -> EDTA (lavender) -> Sodium fluoride/potassium oxalate (gray).

C.Serum tubes (red/gold) -> Blood culture bottles -> Sodium citrate (light blue) -> EDTA (lavender) -> Heparin (green) -> Sodium fluoride (gray).

D.Sodium citrate (light blue) -> Blood culture bottles -> EDTA (lavender) -> Serum tubes (red/gold) -> Sodium fluoride (gray) -> Heparin (green).

Explanation: The standardized order of draw established by SBPC/ML and CLSI is: (1) Blood culture bottles (to maintain sterility), (2) Citrate coagulation tubes (to avoid tissue factor or other anticoagulant contamination), (3) Serum tubes with or without clot activator/gel separator, (4) Heparin tubes, (5) EDTA tubes (placed after heparin/serum to prevent potassium and chelator carryover into chemistry tubes), and (6) Glycolytic inhibitor tubes (sodium fluoride/potassium oxalate).

7A routine outpatient chemistry panel reveals a serum potassium of 8.2 mEq/L and a serum total calcium of 2.1 mg/dL in an asymptomatic 32-year-old female with normal renal function (creatinine 0.7 mg/dL). Repeat clinical examination reveals no electrocardiographic changes. What pre-analytical collection error most commonly accounts for this discordant biochemical profile?

A.Prolonged tourniquet application exceeding 3 minutes without fist pumping.

B.Exposure of the serum tube to direct sunlight causing photo-degradation of electrolytes.

C.Accidental pouring of blood from a lavender-top K2-EDTA tube into a gold-top serum separator tube (or incorrect order of draw).

D.Centrifugation of the blood sample at excessive G-force causing micro-hemolysis.

Explanation: Transferring blood from an EDTA tube (which contains dipotassium or tripotassium EDTA) into a serum tube causes profound artifactual hyperkalemia (due to exogenous potassium in K2-EDTA) and severe pseudo-hypocalcemia/hypomagnesemia (due to chelation of divalent cations by EDTA). In an asymptomatic patient with normal renal function, this distinctive profile is pathognomonic for EDTA contamination.

8A serum sample with visible in vitro hemolysis (hemolysis index > 300 mg/dL free hemoglobin) arrives at the laboratory. Which set of biochemical analytes will show the most significant artifactual elevations due to the direct release of intracellular contents from lysed erythrocytes?

A.Chloride, Bicarbonate, and Gamma-Glutamyl Transferase (GGT).

B.Sodium, Alanine Aminotransferase (ALT), and Alkaline Phosphatase (ALP).

C.Creatinine, Blood Urea Nitrogen (BUN), and Total Bilirubin.

D.Potassium, Lactate Dehydrogenase (LDH), and Aspartate Aminotransferase (AST).

Explanation: Erythrocytes contain intracellular concentrations of potassium (~105 mEq/L vs ~4 mEq/L in plasma), lactate dehydrogenase (LDH, ~160-fold higher than serum), and aspartate aminotransferase (AST, ~40-fold higher than serum). In vitro hemolysis ruptures erythrocyte membranes, releasing these intracellular components directly into serum and causing dramatic false elevations.

9The Brazilian framework for services performing Clinical Analysis Examinations (Exames de Análises Clínicas — EAC) was restructured by ANVISA RDC nº 786/2023, which replaced RDC nº 302/2005 and was subsequently consolidated by RDC nº 978/2025, currently in force. Under this framework, how are EAC services classified by technical infrastructure and operational scope?

A.Type I: Community pharmacies and isolated medical clinics (limited to rapid screening Point-of-Care tests without venous blood processing); Type II: Collection posts (Postos de Coleta); Type III: Clinical laboratories, support laboratories, and anatomical pathology laboratories.

B.Type I: Full tertiary hospital laboratories; Type II: Outpatient reference centers; Type III: Specialized molecular pathology centers.

C.Type I: Primary collection posts; Type II: Clinical laboratories; Type III: Point-of-care mobile units and retail pharmacies.

D.Type I: Automated high-throughput laboratories; Type II: Manual testing facilities; Type III: Research and development institutions.

Explanation: RDC nº 786/2023 introduced a three-tier operational taxonomy for EAC, retained by the consolidating RDC nº 978/2025: Serviço Tipo I comprises pharmacies and isolated consulting rooms performing simple screening tests carried out entirely on the premises (no venous blood collection, no storage of specimens for external processing); Serviço Tipo II comprises collection posts (Postos de Coleta), which may not run the analytical phase by their own in-house methods; and Serviço Tipo III comprises clinical laboratories, support laboratories and anatomical pathology laboratories, authorised to perform all EAC. All three tiers must operate a quality management programme (PGQ).

10According to the PALC (Programa de Acreditação de Laboratórios Clínicos) standards of the SBPC/ML, what is the essential operational distinction between Internal Quality Control (Controle Interno da Qualidade - CIQ) and External Quality Assessment / Proficiency Testing (Ensaio de Proficiência - EP / CQE)?

A.CIQ evaluates long-term analytical accuracy through blind inter-laboratory comparisons, whereas EQA evaluates day-to-day precision and repeatability.

B.CIQ monitors continuous analytical stability, repeatability, and immediate run validity within the laboratory, whereas EQA assesses analytical accuracy and inter-laboratory comparability against peer groups.

C.CIQ is mandatory only for accredited laboratories, while EQA is voluntary under ANVISA technical norms.

D.CIQ detects only random errors, while EQA detects only pre-analytical collection errors.

Explanation: Internal Quality Control (CIQ) uses stable control materials analyzed continuously to monitor imprecision, repeatability, and detect immediate analytical shifts or random errors before releasing patient results. External Quality Assessment (EQA/Proficiency Testing) evaluates blind samples provided by an external organizer to verify accuracy, method bias, and inter-laboratory comparability against peer instruments.

About the TEPAC Patologia Clínica Exam

The Título de Especialista em Patologia Clínica / Medicina Laboratorial (TEPAC) is the official board certification for clinical pathologists and laboratory medicine physicians in Brazil, awarded by the Sociedade Brasileira de Patologia Clínica/Medicina Laboratorial (SBPC/ML) in partnership with the Associação Médica Brasileira (AMB) and registered with the Conselho Federal de Medicina (CFM). The examination evaluates comprehensive expertise in laboratory governance, pre-analytical and post-analytical phases, internal/external quality control (Westgard multi-rules, Six Sigma), clinical biochemistry, hematology and hemostasis, clinical microbiology and BrCAST interpretation, immunology and serology, urinalysis and body fluid analysis, and molecular diagnostics. Achieving the TEPAC is the definitive milestone for Brazilian physicians to obtain their Registro de Qualificação de Especialista (RQE) in Clinical Pathology / Laboratory Medicine.

Assessment

Four-stage examination administered by SBPC/ML and AMB: Prova Teórica (60 MCQs covering quality management, biochemistry, hematology, microbiology, immunology, body fluids, and molecular pathology), Prova Teórico-Prática (10 practical/case scenarios), Análise Curricular (Lattes evaluation), and Prova Oral (oral examination before a specialist board).

Time Limit

4 hours for Prova Teórica + scheduled sessions for Prova Teórico-Prática and Oral Examination

Passing Score

Minimum aggregate score of 70% (7.0 / 10.0 scale) across all examination phases as defined by the official SBPC/ML edital.

Exam Fee

Set each year in the official Edital; consult the current edital for the registration fee and any member discount. (Sociedade Brasileira de Patologia Clínica/Medicina Laboratorial (SBPC/ML) — Associação Médica Brasileira (AMB))

TEPAC Patologia Clínica Exam Content Outline

15%

Gestão da Qualidade, Fases Pré-Analítica, Analítica e Pós-Analítica

Pre-analytical variables (patient preparation, tourniquet time, tube draw order, sample transport, hemolysis/icterus/lipemia interference); analytical quality control (Levey-Jennings charts, Westgard multi-rules 1:3s, 2:2s, R:4s, 4:1s, 10:x, CV%, bias, total allowable error TEa, Six Sigma calculation); post-analytical critical value communication; PALC accreditation criteria; and ANVISA technical-sanitary regulations (RDC 786/2023 / RDC 978/2025).

15%

Bioquímica Clínica e Monitorização Terapêutica

Photometric principles, enzymatic kinetic methods, direct vs indirect ion-selective electrodes (ISE); electrolytes and acid-base disorders; high-sensitivity cardiac troponin delta algorithms; liver function tests (AST, ALT, GGT, ALP isoenzymes, bilirubin fractionation); renal function assessment (creatinine, CKD-EPI 2021 equation, cystatin C); lipid panel (Friedewald vs Martin-Hopkins equation); glycated hemoglobin (HbA1c standardization); endocrine testing; and therapeutic drug monitoring (TDM).

15%

Hematologia Laboratorial e Hemostasia

Automated complete blood count (CBC) technology (Coulter impedance, VCS flow cytometry scattergrams); peripheral blood smear morphology; differential diagnosis of anemias; bone marrow evaluation; acute and chronic leukemias; myeloproliferative and myelodysplastic neoplasms; flow cytometry immunophenotyping; secondary hemostasis (PT/INR, aPTT mixing studies, Rosner index, thrombin time, fibrinogen, D-dimer); thromboelastometry (ROTEM); and thrombophilia workup.

15%

Microbiologia Clínica, Antibiograma BrCAST e Parasitologia

Blood culture protocols and bottle volume optimization; organism identification via MALDI-TOF mass spectrometry; antimicrobial susceptibility testing (AST) using BrCAST / EUCAST breakpoints and interpretive reading; bacterial resistance mechanisms (ESBL, AmpC, KPC, NDM, VRE, MRSA, D-test); mycobacteriology (GeneXpert MTB/RIF, MGIT culture); medical mycology; and clinical parasitology.

15%

Imunologia Clínica e Sorologia Infecciosa

Immunoassay methodology (ELISA, CMIA, ECLIA, Western blot, prozone effect); autoimmune serology (ANA/FAN indirect immunofluorescence patterns per ICAP / Brazilian Consensus, anti-dsDNA, anti-ENA, ANCA, anti-CCP); infectious disease serological algorithms for HIV 4th gen testing, hepatitis B (HBsAg, anti-HBs, anti-HBc, HBeAg), hepatitis C, HTLV, arboviruses, and syphilis (reverse vs traditional algorithm).

15%

Líquidos Biológicos e Uranálise

Urinalysis chemical strip testing and microscopic examination of urinary sediment (dysmorphic erythrocytes, casts, pathological crystals); cerebrospinal fluid (CSF) cytochemistry, opening pressure, and pathogen differential; serous fluid analysis (pleural fluid Light criteria for transudate vs exudate, peritoneal fluid serum-ascites albumin gradient SAAG); and synovial fluid analysis (polarized light crystal identification).

10%

Diagnóstico Molecular e Genética Laboratorial

Molecular diagnostics principles: real-time quantitative PCR (qPCR Ct values, melting curves), RT-PCR, droplet digital PCR (ddPCR); viral load monitoring; Sanger DNA sequencing; Next-Generation Sequencing (NGS) platforms, bioinformatics pipelines, variant classification (ACMG guidelines); and liquid biopsy applications.

How to Pass the TEPAC Patologia Clínica Exam

What You Need to Know

Passing score: Minimum aggregate score of 70% (7.0 / 10.0 scale) across all examination phases as defined by the official SBPC/ML edital.
Assessment: Four-stage examination administered by SBPC/ML and AMB: Prova Teórica (60 MCQs covering quality management, biochemistry, hematology, microbiology, immunology, body fluids, and molecular pathology), Prova Teórico-Prática (10 practical/case scenarios), Análise Curricular (Lattes evaluation), and Prova Oral (oral examination before a specialist board).
Time limit: 4 hours for Prova Teórica + scheduled sessions for Prova Teórico-Prática and Oral Examination
Exam fee: Set each year in the official Edital; consult the current edital for the registration fee and any member discount.

Keys to Passing

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TEPAC Patologia Clínica Study Tips from Top Performers

1Master Statistical Quality Control: Thoroughly understand Westgard multi-rules (1:3s, 2:2s, R:4s, 4:1s, 10:x), distinguishing between random error (1:3s, R:4s) and systematic error (2:2s, 4:1s, 10:x), and calculate CV%, Bias, Total Allowable Error (TEa), and Six Sigma metrics.

2Understand Regulatory Norms and Accreditation: Review ANVISA RDC 786/2023 service classifications (Type I pharmacies/clinics, Type II collection posts, Type III full laboratories) and PALC accreditation standards for pre-analytical, analytical, and post-analytical phases.

3Memorize BrCAST / EUCAST Interpretive Guidelines: Know phenotypic and genotypic detection methods for ESBL, AmpC, carbapenemases (KPC, NDM, OXA-48), MRSA (cefoxitin surrogate), VRE (vanA vs vanB), and the D-test for inducible clindamycin resistance.

4Internalize Diagnostic Algorithms and Formulas: Practice calculating LDL cholesterol using the Friedewald formula (and its triglyceride <400 mg/dL limit), Light's criteria for pleural effusions, SAAG for ascites, Rosner index for coagulation mixing studies, and CKD-EPI 2021 eGFR.

5Correlate Hematology and Coagulation Tracings: Analyze automated CBC scattergrams/histograms (erythrocyte, leukocyte, and platelet channels), peripheral blood smear morphology, flow cytometry gating (CD34, CD117, CD19, CD3, CD4/CD8), and thromboelastometry (ROTEM parameters: CT, CFT, alpha angle, MCF, ML).

6Systematize Serology and Autoimmune Patterns: Master the Brazilian Consensus / ICAP ANA (FAN) patterns (nuclear dense fine speckled AC-2 vs homogeneous AC-1 vs nucleolar AC-8,9,10), 4th generation HIV screening algorithms, and hepatitis B/C serological profiles.

Frequently Asked Questions

What is the TEPAC and why is it essential for clinical pathologists in Brazil?

The Título de Especialista em Patologia Clínica / Medicina Laboratorial (TEPAC) is the official medical specialist certification awarded by the Sociedade Brasileira de Patologia Clínica/Medicina Laboratorial (SBPC/ML) and the Associação Médica Brasileira (AMB). Passing the TEPAC examination qualifies physicians to obtain their specialized registration (Registro de Qualificação de Especialista - RQE) in Clinical Pathology / Laboratory Medicine with their Regional Medical Council (CRM) and the Federal Council of Medicine (CFM), which is legally required to practice and hold technical responsibility as a medical pathologist/laboratory director in Brazil.

What are the prerequisite eligibility requirements to take the TEPAC examination?

Candidates must hold an active medical license registered with a CRM in Brazil and satisfy one of the following criteria: (1) Completion of an accredited Medical Residency Program (CNRM/MEC) in Clinical Pathology / Laboratory Medicine; (2) Completion of an SBPC/ML-recognized training program of equivalent duration and competency matrix; or (3) Documented professional clinical pathology practice for at least 6 years, supported by institutional documentation and meeting curricular criteria outlined in the annual SBPC/ML edital.

How is the TEPAC examination structured?

The TEPAC examination comprises four sequential stages: (1) Prova Teórica: 60 multiple-choice questions assessing foundational and advanced clinical laboratory principles; (2) Prova Teórico-Prática: 10 open-ended practical/case-based questions testing laboratory data interpretation, scattergrams, micrographs, and problem-solving; (3) Análise Curricular: scoring of academic, scientific, and professional activities via Curriculum Lattes; and (4) Prova Oral: an oral defense before an examining board on laboratory medicine stewardship and clinical consultation.

What standards and regulations are tested on the TEPAC?

The examination tests national and international laboratory guidelines, including ANVISA sanitary regulations (RDC nº 786/2023 and RDC nº 978/2025 for clinical laboratories and point-of-care testing), PALC (Programa de Acreditação de Laboratórios Clínicos / SBPC/ML) accreditation standards, ISO 15189, Westgard statistical quality control multi-rules, CLSI validation protocols, BrCAST / EUCAST antimicrobial susceptibility criteria, and the Brazilian Consensus on ANA/FAN (ICAP nomenclature).

Why is this OpenExamPrep practice bank presented in English?

This practice bank is an English-language MCQ study adaptation designed to support Brazilian candidates, international fellows, and laboratory professionals preparing for high-stakes board certifications. While the official TEPAC uses Portuguese, our questions preserve authentic Brazilian laboratory nomenclature, SBPC/ML guidelines, ANVISA regulatory references, and BrCAST interpretive standards inline.