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Estradiol Free, Equilibrium Dialysis, With Total Estradiol, HPLC/MS-MS (Endocrine Sciences)

CPT: 82670; 82681
82670; 84999
82670; 82681
Updated on 12/31/2020
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Expected Turnaround Time

9 - 12 days


Specimen Requirements


Specimen

Serum, frozen


Volume

3 mL


Minimum Volume

1 mL (Note: This volume does not allow for repeat testing.)


Container

Gel-barrier tube or red-top tube


Collection

Serum must be separated from cells within 45 minutes of venipuncture. Send serum in a plastic transport tube. To avoid delays in turnaround time when requesting multiple tests on frozen samples, please submit separate frozen specimens for each test requested.


Storage Instructions

Freeze


Stability Requirements

Temperature

Period

Room temperature

1 day

Refrigerated

6 days

Frozen

32 months


Causes for Rejection

Plasma sample


Test Details


Methodology

Liquid chromatography tandem mass spectrometry (LC/MS/MS); equilibrium dialysis


LOINC® Map

Order Code Order Code Name Order Loinc Result Code Result Code Name UofM Result LOINC
500649 Estradiol, Free Serum 502608 Estradiol, Serum, MS pg/mL 35384-7
500649 Estradiol, Free Serum 500431 Free Estradiol, Percent % 14960-9
500649 Estradiol, Free Serum 500432 Free Estradiol, Serum pg/mL 2240-0

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