Method for supplementing a sample with specific information and sample tube system

A method for obtaining specific information on a sample, the method comprising the following steps:

• adding a chemical marker having a defined composition to a sample,
• storing data reflecting the composition of the chemical marker and information assigned to the chemical marker, wherein this marker-assigned information is not related to the composition of the chemical marker itself,
• analyzing the sample with NMR spectroscopy so as to simultaneously obtain a) a sample-related result comprising data on the sample and b) a marker-related result comprising data on the marker composition,
• comparing the marker-related result with the stored data,
• assigning the marker-assigned stored information to the sample based on the preceding comparison,
• obtaining the specific information assigned to the sample,
• displaying and/or storing the sample-related result if the marker-assigned stored information matches predefined criteria, and
• blocking the sample-related result if the marker-related result does not match predefined criteria.