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Test ID: FFES    
Estradiol Free, Serum (includes Estradiol and SHBG)

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Test Classification Provides information regarding the medical device classification for laboratory test kits and reagents. Tests may be classified as cleared or approved by the US Food and Drug Administration (FDA) and used per manufacturer's instructions, or as products that do not undergo full FDA review and approval, and are then labeled as an Analyte Specific Reagent (ASR), Investigation Use Only (IUO) product, or a Research Use Only (RUO) product.

ASR - Analyte Specific Reagent for Sex Hormone Binding Globulin (SHBG), Serum This test was developed and its performance characteristics determined by Esoterix. It has not been cleared or approved by the U.S. Food and Drug Administration. The FDA has determined that such clearance is not necessary. This test is used for clinical purposes. It should not be regarded as investigational or for research. This laboratory is regulated under the Clinical Laboratory Improvement Amendment (CLIA) of 1988 as qualified to perform high complexity clinical testing.

CPT Code Information Provides guidance in determining the appropriate Current Procedural Terminology (CPT) code(s) information for each test or profile. The listed CPT codes reflect Mayo Medical Laboratories interpretation of CPT coding requirements. It is the responsibility of each laboratory to determine correct CPT codes to use for billing.


84270/Sex Hormone binding globulin

84999/Unlisted chemistry procedure

LOINC® Code Information Provides guidance in determining the Logical Observation Identifiers Names and Codes (LOINC) values for the order and result codes of this test.

Test IDTest Order NameOrder LOINC Code
FFESEstradiol Free, Serum (includes Estradiol and SHBG)In Process


Result IDTest Result NameResult LOINC Code
Z0228Free Estradiol, Percent14960-9
Z0229Free Estradiol, Serum2240-0
Z0230Sex Hormone Binding Globulin (SHBG)13967-5
Z0259Estradiol, Serum35384-7

LOINC and CPT codes are provided by the performing laboratory.