Test Name: Iron Studies
CPT Codes: 83540 / 83550 / 82728
Turnaround Time: 24–48 Hours

• Iron 
• Total Iron-Binding Capacity (TIBC) 
• Ferritin 
• % Iron Saturation (calculated)
   

• Specimen: Serum 
• Collection Tube: SST
   

• Fasting preferred
   

• Evaluation of iron deficiency or overload 
• Assessment of anemia and iron metabolism
   

Test Name: Albumin
CPT Code: 82040
Turnaround Time: 24–48 Hours

• Specimen: Serum 
• Collection Tube: SST
   

• Assessment of nutritional status 
• Evaluation of liver and kidney disease
   

Test Name: Uric Acid
CPT Code: 84550
Turnaround Time: 24–48 Hours

• Specimen: Serum 
• Collection Tube: SST
   

• Fasting preferred
   

• Evaluation of gout 
• Monitoring of uric acid metabolism
   

Test Name: Blood Urea Nitrogen
CPT Code: 84520
Alternative Names: BUN
Turnaround Time: 24–48 Hours

• Specimen: Serum 
• Collection Tube: SST
   

• Assessment of renal function 
• Evaluation of hydration status
   

Test Name: Creatinine
CPT Code: 82565
Turnaround Time: 24–48 Hours

• Specimen: Serum 
• Collection Tube: SST
   

• Evaluation of kidney function 
• Calculation of estimated GFR
   

Test Name: Creatinine Clearance
CPT Codes: 82575 / 82565
Turnaround Time: 24–72 Hours

• Specimens Required: 
  • 24-hour urine collection 
  • Serum sample
     

• Accurate 24-hour urine collection is critical 
• Record total urine volume
   

• Measurement of glomerular filtration rate 
• Assessment of renal function
   

Test Name: Triglycerides
CPT Code: 84478
Turnaround Time: 24–48 Hours

• Specimen: Serum 
• Collection Tube: SST
   

• Fasting (9–12 hours) recommended
   

• Cardiovascular risk assessment 
• Monitoring lipid disorders
   

Test Name: Microalbumin/Creatinine Ratio, Urine
CPT Codes: 82043 / 82570
Turnaround Time: 24–48 Hours

• Specimen: Urine 
• Collection Type: Random urine sample
   

• Early detection of diabetic nephropathy 
• Monitoring kidney damage
   

Test Name: Celiac Disease Panel
CPT Codes: 83516 / 82784
Turnaround Time: 48–72 Hours

• Tissue Transglutaminase (tTG) IgA 
• Total IgA
   

• Specimen: Serum 
• Collection Tube: SST
   

• Patient should be on a gluten-containing diet prior to testing
   

• Screening for celiac disease 
• Evaluation of gluten-sensitive enteropathy