How often should a lactic acid level be checked?

How is the cerebral spinal fluid produced from the blood? What is black pneumonia? When is in bed sleeping she is woken up by her body trembling all over it stops after a few minutes.what can be causing this.? Is it normal to experience a leg cramp after a heart catherization? Can a nurse practitioner perform a c section? How does the brain remember? What is a hypnotise? Why does your belly button bleed when you run? How do you walk when you're tired? Why do people go insane? Should a woman who was around a mother who has a bipolar disorder see a doc to find out if she has it? What does increased vascularity to the thyroid gland mean? Did Wakefield et al.'s data and interpretations merit the resulting public fear of the MMR vaccine Why or why not? Is 116 over 77 good blood pressure? What material are ear plugs usually made from? Very very faint positive pregnancy test no period very bad cramping are you pregnant? Does beef broth contain gluten? Breathing heart beating and food a digesting are examples of activities using what is it called? Which structure in fish performs the same function as lungs do in mammals? Is ringworm prone in the Ohio valley?