LTP12 case studies
LTP12 · Put your knowledge to work in context.
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 case studies are 5 cases and about 3,197 words.
1The 4 °C Overnight Potassium Shift
A 62-year-old outpatient on lisinopril and spironolactone has blood drawn at 08:10 in a clinic where the courier arrives at 08:30. The serum tube is spun at 09:05 at the collection site, but the courier is delayed and the separated serum sits on the counter at room temperature until it reaches the core lab at 13:40.
606 words, about 3 min2The Proficiency Test That Arrived Warm
A hospital laboratory participates in an external proficiency testing program for HbA1c. The shipment arrives on a Friday afternoon in July.
606 words, about 3 min3The Reference Interval That Does Not Fit
A community hospital laboratory is verifying a manufacturer's reference interval for serum creatinine on a new analyzer. The manufacturer's interval is 0.60–1.10 mg/dL for adults, derived from a mostly White, mostly male reference population at a large academic center.
640 words, about 3 min4The QC Rule That Fires Every Morning
A chemistry laboratory runs two levels of quality control material (normal and abnormal) at the start of each shift on an analyzer measuring glucose, creatinine, and ALT. Over the past 30 days, the normal-level glucose QC has failed the 1-3s rule on 9 of 30 mornings, always on the first run of the day and always resolving on repeat.
681 words, about 3 min5The Delta Check That Fires on a Transplant Patient
A 47-year-old kidney transplant recipient has been monitored at the same hospital for 3 years. Their creatinine has been stable at 1.3–1.5 mg/dL.
664 words, about 3 min