This is lifted from:
THE IMPORTANCE OF BONE MARKERS
KEITH MC CORMICK, DC AND
IRMA JENNINGS, INHC - HOLISTIC BONE COACH
page4.
http://www.food4healthybones.com

It is up to you to decide if McCormick is the ultimate authority or not, being placed on a pedestal.

Dr. McCormick Bone Marker Ranges
C-Telopeptide of Type-1 Collagen (CTx) 100 - 375 pg/mL
Vitamin D 30 - 50 ng/mL
Ionized calcium 48 - 56 mg/dL
24-hour urine calcium
women less than 200 mg/24 hours
men less than 250 mg/24 hours
TSH 0.5 - 4.5 mU/L
hsCRP less than 1 mg/L
Homocysteine less than 8 μmol/L
Total serum calcium 8.9 - 10.0 mg/dL
Bone Specific Alkaline Phosphatase (BSAP )
postmenopausal women - less than 22 μg/L
men less than 20 μg/L
Osteocalcin 8-32 ng/mL
P1NP 30 - 50 μg/L