Free Testosterone by Mass Spectrometry/Equilibrium Dialysis
Test Catalog Information
| Test Catalog Synonyms | |
| EPIC Synonyms |
Testosterone, Free MS/EQ Dialysis TESTMS |
| Cerner Primary Mnemonic | Testosterone, Free MS/EQ Dialysis |
| EPIC Display Name | Free Testosterone by Mass Spectrometry/Equilibrium Dialysis |
| Allscripts (AEHR) Order Name | Testosterone, Free MS/EQ Dialysis |
| Sunrise Clinical Manager (SCM) Order Name | Testosterone, Free MS/EQ Dialysis |
| EPIC Inpatient Orderable | Yes |
| EPIC Outpatient Orderable | Yes |
| Cerner Results |
Testosterone % Free Testosterone (Dialysis) Free Testosterone, Serum |
| Clinical Info |
Measurement of total and free testosterone is key in diagnosis of androgen excess or deficiency. Free testosterone is best measured by equilibrium dialysis, while total testosterone is measured by HPLC with tandem mass spectrometry.1-3 Free testosterone is estimated in this profile using these recommended techniques. Tritiated testosterone is added to the sample and allowed to dialyze across a membrane. Once equilibrium has been achieved, the solutions on both sides of the membrane are sampled to determine the percent free testosterone. Total testosterone is measured by HPLC with tandem mass spectrometry. Serum free testosterone is then calculated by multiplying the percent free testosterone by the total testosterone concentration with unit correction. Limitations This method is recommended for testing women, children, and hypogonadal men. |
| Specimen Type | |
| Container |
Gold Top Tube |
| Collection Instructions |
Container/Tube: Gold Top Tube Specimen: 2 mL serum ( 1 mL min) Transport Temperature Refrigerated Collection Serum must be separated from cells within 45 minutes of venipuncture. |
| Transport Instructions | |
| Specimen Stability |
6 Days Room Temperature 7 Days Refrigerated 2.6 Years Frozen |
| Methodology |
Testosterone: high-pressure liquid chromatography (HPLC)/tandem mass spectrometry; free testosterone: equilibrium dialysis |
| Days Performed |
TAT: 6 - 10 Days |
| Performing Laboratory |
LabCorp- Endocrine Sciences |
| CPT |
84402 84403 LOINC Code: 2991-8 |
| PDM |
225709 |
Desired Epic Build Free Testosterone by Mass Spectrometry/Equilibrium Dialysis
| Cerner Primary Mnemonic: | Testosterone, Free MS/EQ Dialysis | ||||||||||||
| PDM | 225709 | ||||||||||||
| Informatics - Workgroup | Endocrine | ||||||||||||
| Synonyms * | Testosterone, Free MS/EQ Dialysis TESTMS | ||||||||||||
| Display Name * | Free Testosterone by Mass Spectrometry/Equilibrium Dialysis | ||||||||||||
| Order Entry Specimen Sources * | |||||||||||||
| Order Entry Specimen Types |
Blood
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| Ordering info (EPIC SmartText) | Measurement of total and free testosterone is key in diagnosis of androgen excess or deficiency. Free testosterone is best measured by equilibrium dialysis, while total testosterone is measured by HPLC with tandem mass spectrometry.1-3 Free testosterone is estimated in this profile using these recommended techniques. Tritiated testosterone is added to the sample and allowed to dialyze across a membrane. Once equilibrium has been achieved, the solutions on both sides of the membrane are sampled to determine the percent free testosterone. Total testosterone is measured by HPLC with tandem mass spectrometry. Serum free testosterone is then calculated by multiplying the percent free testosterone by the total testosterone concentration with unit correction. Limitations This method is recommended for testing women, children, and hypogonadal men. | ||||||||||||
| IP Orderable | Yes | ||||||||||||
| OP Orderable | Yes | ||||||||||||
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AOEs * | |||||||||||||
| AP AOEs | |||||||||||||
| Special History | No | ||||||||||||
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| Procedure Category Change | |||||||||||||
Cerner Results
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Actual Epic build
| Procedure Id | 114664 | ||||||||||||||||||||||||
| Pdm | 225709 | ||||||||||||||||||||||||
| Order Display Name | Free Testosterone by Mass Spectrometry/Equilibrium Dialysis | ||||||||||||||||||||||||
| Procedure Name | TESTOSTERONE, FREE MS/EQ DIALYSIS | ||||||||||||||||||||||||
| Procedure Master Number | LAB11138 | ||||||||||||||||||||||||
| Short Procedure Name | TESTOSTERONE, FREE MS/EQ DIALYSIS | ||||||||||||||||||||||||
| Category Code | 1.0 | ||||||||||||||||||||||||
| Category Code Record Name | LAB BLOOD ORDERABLES | ||||||||||||||||||||||||
| Synonyms | TESTOSTERONE, FREE MS/EQ DIALYSIS TESTMS | ||||||||||||||||||||||||
| Clinically Active | Yes | ||||||||||||||||||||||||
| Orderable | Yes | ||||||||||||||||||||||||
| Performable | Yes | ||||||||||||||||||||||||
| Filter Genomics | |||||||||||||||||||||||||
| Reference Link Url | https://labs.northwell.edu/epic/test/114664 | ||||||||||||||||||||||||
| Ordering Instructions | |||||||||||||||||||||||||
| Default Specimen Type | Blood | ||||||||||||||||||||||||
| Specimen Type Pick List | Blood | ||||||||||||||||||||||||
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| Specimen Source Pick List | Blood, Arterial Blood, Capillary Blood, Central Line Blood, Venous | ||||||||||||||||||||||||
| Specimen Source Default - Male | Blood, Venous | ||||||||||||||||||||||||
| Specimen Source Default - Female | Blood, Venous | ||||||||||||||||||||||||
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| Edp Ip Specimen Source | Blood, Venous Blood, Central Line Blood, Arterial Blood, Capillary | ||||||||||||||||||||||||
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| Edp Ip Specimen Type | Blood | ||||||||||||||||||||||||
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| Derived Edp Ip Buttons S | Blood, Capillary Blood, Venous Blood, Central Line Blood, Arterial | ||||||||||||||||||||||||
| Derived Edp Ip Buttons T | Blood | ||||||||||||||||||||||||
| Derived Edp Op Buttons S | |||||||||||||||||||||||||
| Derived Edp Op Buttons T | |||||||||||||||||||||||||
| Ip Orderable | 1 | ||||||||||||||||||||||||
| Op Orderable | 1 | ||||||||||||||||||||||||
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EPIC Components (results)
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