Please assess the completion status of the following clinical trial:

Trial Title: This Study is to Determine if Degenerative Spinal Pain and Disorders Cause the Levels of Substance P to Change in a Patients Saliva, Blood and/or Cerebrospinal Fluid.

Study Design Characteristics:
- Allocation: None
- Intervention Model: None
- Observational Model: CASE_CONTROL
- Primary Purpose: None
- Time Perspective: PROSPECTIVE
- Masking: None
- Phase: None
- Number of Arms: None

Eligibility Criteria:
Inclusion Criteria:~* Undergoing spinal surgery for medically refractory spinal radiculopathy,~* myelopathy or neurogenic claudication based on either history, physical examination or radiologic studies demonstrating neural compression or degenerative disc disease.~* Undergoing surgery for medically refractory axial spinal pain.~Exclusion Criteria:~* Previous spinal procedures or operations,~* radicular pain,~* history of fibromyalgia,~* chronic pain,~* rheumatoid arthritis,~* autoimmune disorders,~* HIV,~* PTSD,~* Major Depressive Disorder,~* migraine headaches or active rhinosinusitis,~* nicotine intake

- Gender: ALL
- Minimum Age: 18 Years
- Maximum Age: 65 Years
- Healthy Volunteers: t

Study Arms:
- Healthy volunteers (Type: None): None
- surgery for spinal radiculopathy (Type: None): None
- surgery for axial spine pain (Type: None): None
- myelography for spinal pain (Type: None): None

Based on this trial design, predict the completion outcome and termination type (if applicable).