Mayo Clinic Laboratories only accepts Nuchal Translucency (NT) measurements from certified sonographers. Mayo Clinic Laboratories must review the NT/CRL data for each certified sonographer before a specimen is submitted.
The sonographer must provide the required information by completing the following steps:
Note: If a sonographer's technique differs significantly from that of the reference curve, the accuracy of the results will be compromised.
After the NT/CRL data review is complete, Mayo Clinic Laboratories provides a sonographer code to the sonographer. The sonographer code must be included with each specimen submitted.
Clinic personnel must complete the First Trimester/Sequential Maternal Screening Patient Information form (T593) for each patient and include the form with each specimen submitted.
Mayo Clinic Laboratories sends a quality report to each sonographer within a minimum of 50 data points. The report includes the number of measurements, median, slope, and standard deviation. Sonographers falling outside expected norms are asked to contact their certification agency for remediation. Sonographers who continue to fall outside of expected norms might be required to submit a letter from their certification agency validating their ability to continue to perform nuchal translucency measurements.
If you have questions, contact Customer Service and ask for the maternal screening area: 800-533-1710