Test Name: Vitamin B12
CPT Code: 82607
Alternative Names: Cobalamin
Turnaround Time: 24–48 Hours

• Specimen: Serum 
• Collection Tube: SST 
• Recommended Volume: 1.0 mL
   

• Fasting preferred, if possible
   

• Evaluation of vitamin B12 deficiency 
• Assessment of anemia and neurological disorders
   

Test Name: Folate
CPT Code: 82746
Alternative Names: Folic Acid
Turnaround Time: 24–48 Hours

• Specimen: Serum 
• Collection Tube: SST
   

• Fasting preferred
   

• Evaluation of folate deficiency 
• Assessment of megaloblastic anemia
   

Test Name: Vitamin D, 25-Hydroxy
CPT Code: 82306
Alternative Names: 25-OH Vitamin D
Turnaround Time: 24–48 Hours

• Specimen: Serum 
• Collection Tube: SST
   

• Assessment of vitamin D status 
• Evaluation of bone health and deficiency
   

Test Name: Vitamin D, 1,25-Dihydroxy
CPT Code: 82652
Alternative Names: Calcitriol
Turnaround Time: 48–72 Hours

• Specimen: Serum 
• Collection Tube: SST
   

• Protect specimen from light if possible
   

• Evaluation of calcium metabolism 
• Assessment of renal or parathyroid disorders
   

Test Name: Calcium
CPT Code: 82310
Turnaround Time: 24–48 Hours

• Specimen: Serum 
• Collection Tube: SST
   

• Evaluation of calcium balance 
• Assessment of bone and parathyroid disorders
   

Test Name: Magnesium
CPT Code: 83735
Turnaround Time: 24–48 Hours

• Specimen: Serum 
• Collection Tube: SST
   

• Evaluation of electrolyte imbalance 
• Monitoring magnesium deficiency or excess
   

Test Name: Phosphorus
CPT Code: 84100
Alternative Names: Phosphate
Turnaround Time: 24–48 Hours

• Specimen: Serum 
• Collection Tube: SST
   

• Evaluation of renal function 
• Assessment of bone metabolism