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

TEST: 500649
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CPT: 82670; 82681
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Expected Turnaround Time

9 - 12 days

Turnaround time is defined as the usual number of days from the date of pickup of a specimen for testing to when the result is released to the ordering provider. In some cases, additional time should be allowed for additional confirmatory or additional reflex tests. Testing schedules may vary.

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 2240-0 502608 Estradiol, Serum, MS pg/mL 35384-7
500649 Estradiol, Free Serum 2240-0 500431 Free Estradiol, Percent % 14960-9
500649 Estradiol, Free Serum 2240-0 500432 Free Estradiol, Serum pg/mL 2240-0

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