- CLIA (Clinical Laboratory Improvement Amendments)
- US federal regulations under which all laboratories testing human specimens must be certified, categorized by test complexity: waived, moderate, or high.
- CAP Accreditation
- Voluntary accreditation by the College of American Pathologists that is recognized by CMS as meeting CLIA requirements and is widely required by hospital and insurance contracts.
- Test Menu
- The defined catalog of diagnostic tests a laboratory offers, organized by clinical category such as hematology, chemistry, microbiology, or molecular diagnostics.
- CPT Code
- Current Procedural Terminology code assigned to each laboratory test, used to bill Medicare, Medicaid, and private insurers for reimbursement.
- Reimbursement Rate
- The amount a payer β Medicare, Medicaid, or a commercial insurer β pays the laboratory per test, typically set by the Clinical Laboratory Fee Schedule (CLFS) or negotiated contracts.
- LIS (Laboratory Information System)
- Software that manages specimen tracking, test ordering, result reporting, quality control data, and billing workflows within a laboratory.
- TAT (Turnaround Time)
- The elapsed time from specimen receipt to verified result delivery β a key operational metric and competitive differentiator for clinical labs.
- Send-Out Test
- A test a laboratory cannot perform in-house and routes to a reference laboratory, incurring a pass-through cost that affects gross margin.
- Revenue per Accession
- Total laboratory revenue divided by the number of specimens processed β a unit-economics metric used to benchmark lab efficiency and pricing.
- Quality Management System (QMS)
- The documented set of policies, procedures, and controls a laboratory uses to ensure test accuracy, regulatory compliance, and continuous improvement.
- Proficiency Testing (PT)
- A mandatory CLIA program in which laboratories test externally provided unknown samples and submit results to demonstrate ongoing accuracy.
- Payer Mix
- The proportion of a laboratory's revenue derived from each payment source β Medicare, Medicaid, commercial insurance, and self-pay β which directly drives average reimbursement and cash-flow timing.