Hello, It's because of cervical spondylitis, blood test is not right place to look.
Just go for x- ray (Lateral and AP view) cervical region and you will get your answer.
That's why you have to consult a doctor rather to go for random blood tests.
Take treatment form me, if you want to get cured for this
Next Steps
Do some neck streching exercise.
Try to correct your posture during work and while sleeping
Health Tips
Can also give some Hot/cold treatment. Try both and continue which ever gave you some relief