Dihydrotestosterone, 5 Alpha
Test Codes
EPIC: LAB6007, Beaker: XDHT, Mayo: DHTS
Department
Send Outs
Instructions
A number of drugs are known to influence endocrine function directly, or to interfere with assay methodology. Whenever possible, physicians should consider discontinuing all drugs, except those necessary to the patient's well-being, several days prior to sample collection. Always note any drugs being administered on the Test Request Form.
Specimen Collection Criteria
Collect (preferred specimen): One plain Red-top tube.
Also acceptable: One Gold-top SST tube.
Physician Office/Draw Specimen Preparation
Let specimen clot 30-60 minutes then centrifuge to separate serum from cells. Transfer serum to a plastic transport tube and refrigerate (2-8°C or 36-46°F).
Preparation for Courier Transport
Transport: 1.0 mL serum, refrigerated (2-8°C or 36-46°F). (Minimum: 0.6 mL)
Rejection Criteria
Specimens not collected and processed as indicated.
In-Lab Processing
Let specimen clot 30-60 minutes then centrifuge to separate serum from cells. Transfer serum to a plastic transport tube and refrigerate (2-8°C or 36-46°F).
Transport: 1.0 mL serum, refrigerated (2-8°C or 36-46°F). (Minimum: 0.6 mL)
Storage
Specimen Stability for Testing:
Room Temperature (20-26°C or 68-78.8°F): unacceptable
Refrigerated (2-8°C or 36-46°F): 7 days
Frozen (-20°C/-4°F or below): 3 months
Specimen Storage in Department Prior to Disposal: 2 Weeks
Specimen retention time is determined by the policy of the reference laboratory. Contact the Send Outs Laboratory with any questions.
Laboratory
Sent to Mayo Clinic Laboratories in Rochester, MN.
Performed
Monday, Wednesday, Thursday, Friday.
Results available in 3-9 days.
Reference Range
By report.
Test Methodology
Liquid Chromatography-Tandem Mass Spectrometry (LC-MS/MS).
CPT Codes
82642
LOINC: 1848-1
Contacts
Send Outs Laboratory – RO
248-551-9045
Name: Send Outs Laboratory – RO
Location:
Phone: 248-551-9045
Last Updated
9/25/2023
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