Lab Oversight: A Building Block of Trust

There are several types of CLIA certificates, all issued by the federal government. All laboratories performing clinical testing are required to obtain the type of CLIA certificate appropriate for their laboratory.

• Certificate of Waiver – This is the type of CLIA certificate required for laboratories that perform only “waived” tests. Laboratory tests that have been approved as “waived” by the FDA are simple tests that have an insignificant risk of erroneous results. For example, pregnancy tests that can be purchased in a drug store are considered “waived.” Laboratories with a CLIA certificate of waiver do not undergo routine federal inspections, and there are very few federal regulatory requirements for the performance of waived tests.
• Certificate of Provider Performed Microscopy Procedures (PPMP) – The CLIA regulations define a subset of tests as PPMP tests. This includes a limited number of microscopic examinations that are classified as PPMP when performed by a health care practitioner. Laboratories with a CLIA PPMP certificate can perform PPMP and waived tests. These laboratories do not undergo routine federal inspections, but there are federal regulatory requirements covering PPMP tests.
• Certificate of Compliance – Laboratories that perform a higher level of testing, either moderate complexity and/or high complexity, as classified by the FDA, must obtain either a CLIA certificate of compliance or a CLIA certificate of accreditation. Laboratories performing moderate and/or high complexity tests that choose to be inspected by the state agency for adherence to the CLIA regulations and any applicable state regulations have a CLIA certificate of compliance.
• Certificate of Accreditation – Laboratories performing moderate and/or high complexity tests that choose to enroll with a CMS approved accrediting organization for oversight and inspection have a CLIA certificate of accreditation.

Laboratories with certificates of compliance or accreditation have many more stringent regulatory requirements than laboratories with waived or PPMP certificates, including more stringent personnel qualification requirements. Laboratories with certificates of compliance or accreditation may perform all levels of testing, including waived, PPMP, moderate complexity, and high complexity testing.

All laboratories, no matter which type of CLIA certificate they have, must designate a qualified Laboratory Director. The Laboratory Director is responsible for the overall operation of the laboratory. The qualifications necessary to be a Laboratory Director depend on the highest level of testing performed in the laboratory; the higher the level of complexity performed, the more stringent the qualification requirements for the Laboratory Director. There are other required laboratory positions, each with responsibilities defined in the CLIA regulations.

To make sure that laboratories are following the requirements outlined in CLIA, state law, and/or the rules established by the accrediting organizations to qualify for their accreditation, laboratories performing moderate and/or high complexity testing also must undergo regular inspections every two years. Several particularly important areas for inspection are leadership, personnel training and competency requirements, proficiency testing, performance improvement, and quality control requirements. These inspections may be unannounced to eliminate any opportunity for the laboratory to “ramp up” for the inspection. Unannounced inspections assure that the laboratory is in a continual state of readiness to provide safe, quality care to all patients.

• Education and Training Requirements – There are many roles to fill in a laboratory, and both the voluntary systems and the federal regulations spell out educational requirements for laboratory personnel, such as the minimum educational level that a person must have in order to perform each level of laboratory tests. In addition, laboratory personnel may be certified for their profession, obtained through successful completion of a national certification exam. Similarly, laboratory testing personnel are required to undergo orientation and ongoing training to ensure competencies for each test they are performing. Documentation of these training and competency records are reviewed very carefully during inspections and surveys. Some states require state licensure for laboratory personnel and may require documented continuing education. For more information on laboratory personnel, their various roles and education requirements, read our article Medical Laboratory Professionals: Who’s Who in the Lab.
• Proficiency Testing – Laboratories that perform the kinds of tests typical of a hospital laboratory participate in a proficiency testing (PT) program. For this program, an outside agency approved by the federal government, called a PT practitioner, checks on the accuracy of the laboratory’s test results by sending test samples to be analyzed. The outside agency knows the levels of the substances, or analytes, contained in the samples – the sodium level, for example – but the laboratory does not. PT includes samples for each specialty and subspecialty area in which the laboratory performs testing. The laboratory must test the samples the same way it would test patients’ specimens. The outside agency uses PT to grade the laboratory’s accuracy. Laboratory inspectors verify that the lab has successfully participated in an approved PT program.
• Quality Control – To ensure the quality of the results, clinical laboratories test “control” samples along with the patient samples. The laboratorians know what these control samples contain, so the samples provide a built-in check on the process of analysis, which in many cases is carried out by an automated instrument called an analyzer. The control samples contain different levels of concentrations of the analyte being measured, to make sure the analyzer is running correctly across the range of concentrations the patient samples may contain. If the results vary from the known quantities, the laboratorians know there is a problem. The problem identified must be corrected before patient testing can be reported. As a general rule, no patient results are reported without passing the required quality control for each laboratory test. Laboratory inspectors also examine these records during their evaluations.
• National Patient Safety Goals – The goals highlight problematic areas in all phases of the laboratory testing and describe evidence and expert-based solutions to these problems. The purpose of these National Patient Safety Goals is to promote specific improvements in patient safety. For example, correct patient identification is one of the goals that must be met throughout the process for specimen collection, analysis, and result reporting.

Following an inspection or survey of a laboratory, the state agency or the accrediting organization will provide the laboratory with a list of any area in which they did not meet requirements (noncompliances), or deficiencies identified during the inspection. The laboratory will be required to make improvements to bring them in to compliance with requirements. Laboratories must then submit documentation or a plan of correction to address the inspection findings. State agencies and accrediting organizations offer support and guidance during the post-survey period to help the laboratory staff understand the requirements and make sure that their plan of correction is implemented correctly.

State agencies and accrediting organizations also often leave the laboratories with recommendations on how they can improve their processes or be more efficient.

Sometimes laboratories are re-inspected a few months after the initial inspection, so that the state agency or accrediting organization can assure that the lab has implemented acceptable corrective actions.

CLIA regulations create a “level playing field” in which all laboratories must meet appropriate criteria in competing with each other. However, the quality of services still varies among laboratories. To ensure that you are receiving the best quality services, there are steps you can take to check for yourself.

• Your first consideration is the kind of laboratory that will be testing your specimen. Most physician office laboratories run only waived tests. Education or training requirements for the personnel performing only waived testing vary, depending on the accreditation organization requirements, but are generally less stringent. Ask your healthcare practitioner about the qualifications of those staffing the laboratory. Also ask if the laboratory participates in any outside education or quality checking programs.

• The major federal requirement for labs that perform only waived tests is that they follow the manufacturer’s instructions for the tests. However, a recent U.S. Health and Human Services Department study found that nearly one-half failed to do so. Can the person who will perform your test explain to you the specified procedures? Is the laboratory following proper specimen labeling and handling procedures (for example, was your specimen labeled with your name in your presence)?

• If your tests will be run by a larger, more complex laboratory, it will undoubtedly fall under the most stringent CLIA accreditation requirements, but you still might like reassurance about its quality. Ask your health care practitioner about what considerations went into the choice of the laboratory. What criteria did your healthcare practitioner use? How long has your practitioner been dealing with this laboratory? How is your practitioner assured of the accuracy of the test results?

• The sample collection process itself should provide you some clues: was the specimen properly labeled? Were you given clear and adequate instructions if you collected the sample yourself? When you have blood drawn, you can ask to see the labeled collection tubes before they are taken away. That way you can verify that your specimen is accurately labeled. The person collecting your sample should always verify your identity. This is why, even if they know you, they may ask you to verify your name and date of birth.

• Is your health care practitioner aware of the laboratory’s accreditation status? Because laboratories are so closely regulated, if you’d like reassurance on the laboratory’s accreditation and certification, you can check this yourself by visiting various web sites. The U.S. Centers for Medicare and Medicaid Services posts a list of accredited laboratories as well as those that have had some trouble. Through the links listed in Related Content below, you can find other inspection and certification agencies that might have further information on the laboratory you’re interested in.