Liver blood tests are some of the most commonly performed blood tests. These tests can be used to assess liver functions or liver injury. An initial step in detecting liver damage is a simple blood test to determine the level of certain liver enzymes (proteins) in the blood.
1 Degeneration (deterioration) of the disc makes the disc more susceptible to herniation (rupture), which can lead to localized or radiating pain. 2  Sciatica can result from disc herniation ( ruptured disc ) when nerves in the low back are irritated.
Degeneration reduces the disc's normal ability to absorb physical impact and provide cushioning for the vertebral column. Degeneration of a thoracic disc is marked by a gradual narrowing of the disc space, placing stress on the other joints of the vertebrae (facet joints).