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HelpTest Code TTEB Testosterone, Total
Specimen and Container/Tube
Specimen Type: Serum
Preferred Specimen: Red Top
Other Acceptable specimens: None
Volume
Preferred Volume: 4.0 mL
Minimum Volume: 0.2 mL
Specimen Stability
|
Storage Temperature |
Stability |
|
Room temperature |
7 days |
|
Refrigerated |
7 days |
|
Frozen |
3 months |
Collection Instructions
Collect specimen per standard laboratory collection procedures.
Specimen Handling and Transport Instructions
UCMC Onsite Instructions:
Collect specimen per standard collection procedure and send to laboratory immediately.
UCMC Offsite and UC MedLab Outreach Instructions:
- Samples should be centrifuged within 2 hours of collection.
- Centrifuge specimens at >2500 x g for 10 minutes at room temperature.
- Aliquot sample into plastic transport tube containing a minimum of 0.2 mL of specimen.
- Samples must be sent room temperature at 15-25oC.
Rejection Criteria
- Common specimen rejected situations include: incorrect specimen type, insufficient volume, missing or incomplete specimen identifiers, incorrect specimen transport, or specimens outside stability limits.
- Specimens that are clotted or grossly hemolyzed.
- Specimens that were transported unspun/whole blood and draw time is greater than 6 hours.
Reference Values
|
Test |
Age |
Sex |
Reference Range |
|
Total Testosterone |
0 - 5 months |
Male |
75 - 400 ng/dL |
|
6 months - 9 years |
<20 ng/dL |
||
|
10 - 11 years |
<130 ng/dL |
||
|
12 - 13 years |
<800 ng/dL |
||
|
14 years |
<1,200 ng/mL |
||
|
15 - 16 years |
100 - 1,200 ng/dL |
||
|
17 - 18 years |
300 - 1,200 ng/dL |
||
|
19 - 55 years |
240 - 950 ng/dL |
||
|
56 - 75 years |
180 - 800 ng/dL |
|
Test |
Age |
Sex |
Reference Range |
|
Total Testosterone |
0 - 5 months |
Female |
20 - 80 ng/dL |
|
6 months - 9 years |
<20 ng/dL |
||
|
10 - 11 years |
<44 ng/dL |
||
|
12 - 16 years |
15 - 60 ng/dL |
||
|
17 - 40 years |
20 - 60 ng/mL |
||
|
41 - 60 years |
<60 ng/dL |
||
|
Post-menopausal (>60 yrs) |
5 - 70 years |
Critical Values
Not applicable
Clinical Indications
Monitor total testosterone serum levels in males and females.
Test Components
Testosterone, Total
Methodology
Liquid Chromatography/Tandem Mass Spectroometry (LC-MS/MS)
CPT Codes
84403
LOINC Codes
2986-8
Additional Information
- Results should always be assessed in conjunction with patient's medical history, clinical examination and other findings.
Turnaround Time
Turnaround times are relative to the time the specimen is received in the test laboratory.
STAT Turnaround Time: Not Available as STAT
Routine Turnaround Time: 4 - 7 Days
Testing Schedule: Test is setup two times per week, typically on Tuesdays & Thursdays
Synonyms/Keyword Search
N/A
Last Review Date
1/13/2023