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Labcorp Oklahoma, Inc.
Test Directory


Index:

Estradiol, Total - Serum

Order Name ESTRADIOL
Test Number: 2006475
Revision Date 05/20/2021
Test Name Methodology LOINC Code
Estradiol, Total - Serum
Chemiluminescence Assay 2243-4 
SPECIMEN REQUIREMENTS
Specimen Specimen Volume (min) Specimen Type Specimen Container Transport Environment
Preferred 1 mL (0.5) Serum Clot Activator SST Refrigerated
Alternate 1 1 mL (0.5) Plasma Lithium Heparin PST (Light Green Top) Refrigerated
Instructions Specify age and sex on requisition.
Separate Serum/Plasma from cells/gel if testing delayed >24hrs
Stability: Ambient N/A. Refrigerated 7 days. Frozen > 7 days.

Note: The lower limit of quantitation for this assay is 24 pg/mL, therefore it may not be suitable for males and prepubertal females.
Patients treated with Mifepristone should not be tested with this assay for up to two weeks following the patient's last dose.
This test is NOT Recommended for Children 12 years and under.
Use Estradiol, Serum Ultrasensitive [Test Number: 3600375 ] for children 12 years and under.
Collection requirements for Estradiol, Serum Ultrasensitive is Serum from a Red No-Gel.
GENERAL INFORMATION
Testing Schedule Mon-Fri 
Expected TAT 1-3 days  
Clinical Use Useful for evaluation of hypogonadism in the female, evaluation of estrogen producing tumors and feminization in males and in assessing ovarian status in "in vitro" fertilization patients. 
CPT Code(s) 82670
Lab Section Chemistry