Test Directory

Test Code
UESTR
Test Name
ESTRADIOL, ULTRASENSITIVE
CPT Codes
82670
Expected Turnaround Time
3 - 6 days
Clinical Utility
Diagnostic applications of estradiol assays include assessment of ovarian function in a wide variety of situations (menstrual disorders, precocious or delayed puberty, assisted reproduction protocols). For men, estradiol measurement may be useful in the evaluation of gynecomastia.
Specimen and Container Info

Specimen Type: Serum

  

Collection Container: Red Top, Plain

Desired Specimen Volume: 0.5 mL

Collection Instructions
  1. Collect a red top, plain tube via venipuncture.
Processing and Submission Instructions
  1. Separate serum from cells.
  2. Transfer 0.5 mL of serum to a clear aliquot tube (screw cap).
Transport Instructions

Transport to the laboratory refrigerated. 

Stability Requirements

Room Temperature

24 hours

Refrigerated

7 days

Frozen

28 days
Causes for Rejection
  • Serum separator tube (SST)
  • Grossly icteric
Methodology
Chromatography/Mass Spectrometry
Reference Intervals

See patient report.

Alternate Names
  • Estradiol, Ultrasensitive, LC/MS
Reference Lab
Quest Diagnostics Nichols Institute
Testing Schedule
Routine, 6 times per week