Test Name: Hemoglobin A1c
CPT Code: 83036
Alternative Names: HbA1c
Turnaround Time: 24–48 Hours

• Specimen: Whole Blood 
• Tube: Lavender Top (EDTA)
   

• No fasting required
   

• Diagnosis and monitoring of diabetes mellitus
   

Test Name: Cortisol
CPT Code: 82533
Turnaround Time: 24–48 Hours

• Specimen: Serum 
• Tube: SST
   

• Morning collection preferred (8–10 AM) unless otherwise specified
   

• Evaluation of adrenal function 
• Assessment of Cushing’s syndrome or adrenal insufficiency
   

Test Name: Dehydroepiandrosterone Sulfate
CPT Code: 82627
Alternative Names: DHEA-S
Turnaround Time: 24–48 Hours

• Specimen: Serum 
• Tube: SST
   

• Evaluation of adrenal androgen production 
• Assessment of hirsutism and virilization
   

Test Name: Estradiol
CPT Code: 82670
Turnaround Time: 24–48 Hours

• Specimen: Serum 
• Tube: SST
   

• Collection timing may depend on menstrual cycle phase
   

• Assessment of ovarian function 
• Monitoring hormone therapy
   

Test Name: Follicle-Stimulating Hormone & Luteinizing Hormone
CPT Codes: 83001 / 83002
Turnaround Time: 24–48 Hours

• Specimen: Serum 
• Tube: SST
   

• Evaluation of reproductive function 
• Investigation of infertility and pituitary disorders
   

Test Name: Progesterone
CPT Code: 84144
Turnaround Time: 24–48 Hours

• Specimen: Serum 
• Tube: SST
   

• Collection timing dependent on menstrual cycle
   

• Confirmation of ovulation 
• Monitoring pregnancy or hormone therapy
   

Test Name: Prolactin
CPT Code: 84146
Turnaround Time: 24–48 Hours

• Specimen: Serum 
• Tube: SST
   

• Avoid stress and exercise prior to collection if possible
   

• Evaluation of pituitary disorders 
• Investigation of galactorrhea and infertility
   

Test Name: Prostate-Specific Antigen
CPT Code: 84153
Alternative Names: PSA, Total PSA
Turnaround Time: 24–48 Hours

• Specimen: Serum 
• Tube: SST
   

• Avoid ejaculation for 24–48 hours prior to collection
   

• Prostate cancer screening and monitoring 
• Evaluation of prostate disease
   

Test Name: Parathyroid Hormone, Intact
CPT Code: 83970
Turnaround Time: 24–48 Hours

• Specimen: Plasma or Serum 
• Tube: Lavender Top (EDTA) preferred
   

• Transport refrigerated if delay expected
   

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

Test Name: Testosterone, Total & Free
CPT Codes: 84403 / 84402
Turnaround Time: 24–72 Hours

• Specimen: Serum 
• Tube: SST
   

• Morning collection preferred (before 10 AM)
   

• Evaluation of hypogonadism 
• Assessment of androgen excess or deficiency
   

Test Name: TSH, Free T3, Free T4, Total T4
CPT Codes: 84443 / 84439 / 84481 / 84436
Turnaround Time: 24–48 Hours

• Thyroid-Stimulating Hormone (TSH) 
• Free Triiodothyronine (Free T3) 
• Free Thyroxine (Free T4) 
• Total Thyroxine (Total T4)
   

• Specimen: Serum 
• Tube: SST
   

• Diagnosis and monitoring of thyroid disorders
   

Test Name: Thyroid Peroxidase Antibody
CPT Code: 86376
Turnaround Time: 24–72 Hours

• Specimen: Serum 
• Tube: SST
   

• Detection of autoimmune thyroid disease 
• Evaluation of Hashimoto’s thyroiditis
   

Test Name: Thyroglobulin with Thyroglobulin Antibody
CPT Codes: 84432 / 86800
Turnaround Time: 48–72 Hours

• Specimen: Serum 
• Tube: SST
   

• Monitoring differentiated thyroid cancer 
• Assessment of residual or recurrent disease