I asked your question to AI (Artificial Intelligence) Chat GPT — https://openai.com/chatgpt
It seems that what you are seeking is still largely in the research stage and not yet commercially available.
Here is Chat GPT’s full answer:

“Yes, it is possible to assess the biological age of specific organs, and this is an area of active research in the field of aging and medical science. While chronological age refers to the time elapsed since birth, biological age aims to reflect the actual physiological age of an individual, taking into account factors that contribute to aging.

Several methods are being explored to determine the biological age of specific organs:

1. **Biomarkers:** Biomarkers are measurable indicators of biological processes or conditions. Researchers are investigating specific biomarkers associated with aging for different organs. For example, telomere length, DNA methylation patterns, and levels of certain proteins or metabolites can serve as indicators of biological age.

2. **Imaging Techniques:** Advanced imaging technologies, such as magnetic resonance imaging (MRI) and positron emission tomography (PET), can provide insights into the structural and functional aspects of organs. Changes in organ structure and function over time can be used to estimate biological age.

3. **Genetic Markers:** Genetic factors play a role in aging, and researchers are exploring genetic markers associated with organ aging. Certain genetic variations may influence the rate at which organs age.

4. **Functional Assessments:** Assessing the functional capacity of organs can provide valuable information about their biological age. For example, measuring lung function, cardiac output, or cognitive performance can be indicative of the aging process.

5. **Multi-omics Approaches:** Integrating data from various omics technologies, such as genomics, transcriptomics, proteomics, and metabolomics, can provide a comprehensive understanding of the molecular processes associated with organ aging.

It's important to note that determining the biological age of specific organs is a complex task, and researchers are still working to refine and validate these methods. The goal is to develop reliable and accurate measures that can help assess an individual's overall health and guide personalized interventions to slow down or reverse the aging process.”