LTP12 study guide
LTP12 · Work through your exam, one topic at a time.
LTP12 is a professional certification exam for laboratory personnel who perform or supervise analytical testing and who need to demonstrate competence across the full testing pathway, from safety and specimen handling through measurement, quality control, reporting, and corrective action. It suits medical technologists, clinical laboratory scientists, analytical chemists, and quality officers working in diagnostic or research laboratories, as well as experienced technicians preparing for supervisory or quality-management responsibilities. The LTP12 study guide has 8 sections and about 1,906 words.
01General Laboratory Practice, Safety, and Quality Management
General laboratory practice ties together the pre-analytical, analytical, and post-analytical phases through a documented quality system. Candidates should understand the quality management system (QMS) hierarchy: quality manual, standard operating procedures, work instructions, and records.
307 words, about 2 min02Specimen Collection, Handling, and Processing
Most laboratory errors originate before analysis. Candidates must know patient preparation, collection timing, tube selection and order of draw, anticoagulants, and the effects of hemolysis, lipemia, and icterus.
252 words, about 1 min03Method Selection, Validation, and Verification
Method selection balances clinical need, analytical performance, cost, and workflow. Candidates should understand analytical sensitivity, specificity, linearity, reportable range, analytical measurement range, and the limit of quantification.
242 words, about 1 min04Quality Control, Calibration, and Proficiency Testing
Quality control detects analytical error through control materials with known target values. Understand the difference between calibration (establishing the relationship between signal and concentration) and calibration verification (confirming that relationship over time).
244 words, about 1 min05Analytical Measurement Techniques and Instrumentation
Candidates should understand spectrophotometry (Beer-Lambert law), turbidimetry, nephelometry, ion-selective electrodes, chromatography, mass spectrometry, and immunoassay formats. Know the difference between endpoint and kinetic methods, and between direct and indirect ISE measurements.
223 words, about 1 min06Data Evaluation, Result Reporting, and Reference Intervals
Data evaluation covers descriptive statistics, outlier assessment, and the delta check. Candidates must know reference interval concepts: central 95% interval, parametric vs nonparametric derivation, and the effect of partitioning by age and sex.
226 words, about 1 min07Regulatory Compliance, Ethics, and Professional Conduct
Regulatory compliance includes accreditation standards, personnel requirements, competency assessment, and record retention. Candidates should understand the roles of the laboratory director, supervisor, and testing personnel, and the distinction between waived, moderate, and high-complexity testing.
210 words, about 1 min08Troubleshooting, Error Investigation, and Corrective Action
Troubleshooting begins with classifying the error as pre-analytical, analytical, or post-analytical. Candidates should understand root cause analysis, the 5 Whys, fishbone diagrams, and corrective and preventive action (CAPA).
202 words, about 1 min