Available Stat

No

Performing Lab

China Basin Chemistry

Performed

Tuesday and Wednesday, reports next day

Methodology

LC/MS/MS

Reported

Test run twice per week. Turnaround time 2-8 days.

Additional Information

This assay is primarily intended for testing in pediatric patients with suspected or complex endocrine abnormalities or in settings where very low levels of testosterone are expected. For routine testing in adult patients, order "Testosterone, Total, Immunoassay" (test code TTES). 
 
Testing may be helpful in assessing testicular function in males and managing hirsutism, virilization in females. Measurement of testosterone by LC/MS/MS overcomes interferences and the known limitations of direct immunoassays in measurement of testosterone values in the lower range. These advantages are particularly relevant for assessment of testosterone in women, children/infants, and men on testosterone reduction therapy for prostate cancer. 
 
Reference ranges adapted from ARUP Laboratories (Clin Chem 2010; 56(7):1138-1147) based on patient correlation studies comparing this LC/MSMS method with the ARUP method and by in-house testing of 20 normal male and 20 normal female volunteers in the UCSF Chemistry laboratory at China Basin. 

Synonyms

  • Testosterone ultrasensitive

Sample Type

Serum

Collect

Red top

Amount to Collect

2 mL blood

Preferred Volume

1 mL serum

Minimum Volume

0.5 mL serum

Stability (from collection to initiation)

Refrigerated serum on cells: 3 days
Refrigerated serum: 2 weeks
Frozen serum: 3 years

Test Code

PTES

Test Group

Testosterone

Performing Lab

China Basin Chemistry

Specimen Preparation

Centrifuge samples aliquot serum and refrigerate

Preferred Volume

1 mL serum

Minimum Volume

0.5 mL serum

Stability (from collection to initiation)

Refrigerated serum on cells: 3 days
Refrigerated serum: 2 weeks
Frozen serum: 3 years

Units

ng/dL

Reference Interval

Age Males Females
Premature (26-28 weeks) 59-125 ng/dL 5-16 ng/dL
Premature (31-35 weeks) 37-198 ng/dL 5-22 ng/dL
Newborn 75-400 ng/dL 20-64 ng/dL
1-5 months 14-363 ng/dL < 20 ng/dL
6-24 months < 37 ng/dL < 9 ng/dL
2-3 years < 15 ng/dL < 20 ng/dL
4-5 years < 19 ng/dL < 30 ng/dL
6-7 years < 13 ng/dL < 7 ng/dL
8-9 years 2-8 ng/dL 1-11 ng/dL
10-11 years 2-165 ng/dL 3-32 ng/dL
12-13 years 3-619 ng/dL 6-50 ng/dL
14-15 years 31-733 ng/dL 6-52 ng/dL
16-17 years 158-826 ng/dL 9-58 ng/dL
18-39 years 300-1080 ng/dL 9-55 ng/dL
40-59 years 300-890 ng/dL 9-55 ng/dL
60 years and older 300-720 ng/dL 5-32 ng/dL
 
Tanner Stage Males Females
Tanner Stage I 2-15 ng/dL 2-17 ng/dL
Tanner Stage II 3-303 ng/dL 5-40 ng/dL
Tanner Stage III 10-851 ng/dL 10-63 ng/dL
Tanner Stage IV-V 162-847 ng/dL 11-62 ng/dL

Additional Information

This assay is primarily intended for testing in pediatric patients with suspected or complex endocrine abnormalities or in settings where very low levels of testosterone are expected. For routine testing in adult patients, order "Testosterone, Total, Immunoassay" (test code TTES). 
 
Testing may be helpful in assessing testicular function in males and managing hirsutism, virilization in females. Measurement of testosterone by LC/MS/MS overcomes interferences and the known limitations of direct immunoassays in measurement of testosterone values in the lower range. These advantages are particularly relevant for assessment of testosterone in women, children/infants, and men on testosterone reduction therapy for prostate cancer. 
 
Reference ranges adapted from ARUP Laboratories (Clin Chem 2010; 56(7):1138-1147) based on patient correlation studies comparing this LC/MSMS method with the ARUP method and by in-house testing of 20 normal male and 20 normal female volunteers in the UCSF Chemistry laboratory at China Basin. 

CPT Codes

84403

LDT or Modified FDA

Yes

LOINC Codes

51005-7

Available Stat

No

Test Code

PTES

Test Group

Testosterone

Performing Lab

China Basin Chemistry

Performed

Tuesday and Wednesday, reports next day

Methodology

LC/MS/MS

Collect

Red top

Amount to Collect

2 mL blood

Sample Type

Serum

Preferred Volume

1 mL serum

Minimum Volume

0.5 mL serum

Specimen Preparation

Centrifuge samples aliquot serum and refrigerate

Units

ng/dL

Reference Interval

Age Males Females
Premature (26-28 weeks) 59-125 ng/dL 5-16 ng/dL
Premature (31-35 weeks) 37-198 ng/dL 5-22 ng/dL
Newborn 75-400 ng/dL 20-64 ng/dL
1-5 months 14-363 ng/dL < 20 ng/dL
6-24 months < 37 ng/dL < 9 ng/dL
2-3 years < 15 ng/dL < 20 ng/dL
4-5 years < 19 ng/dL < 30 ng/dL
6-7 years < 13 ng/dL < 7 ng/dL
8-9 years 2-8 ng/dL 1-11 ng/dL
10-11 years 2-165 ng/dL 3-32 ng/dL
12-13 years 3-619 ng/dL 6-50 ng/dL
14-15 years 31-733 ng/dL 6-52 ng/dL
16-17 years 158-826 ng/dL 9-58 ng/dL
18-39 years 300-1080 ng/dL 9-55 ng/dL
40-59 years 300-890 ng/dL 9-55 ng/dL
60 years and older 300-720 ng/dL 5-32 ng/dL
 
Tanner Stage Males Females
Tanner Stage I 2-15 ng/dL 2-17 ng/dL
Tanner Stage II 3-303 ng/dL 5-40 ng/dL
Tanner Stage III 10-851 ng/dL 10-63 ng/dL
Tanner Stage IV-V 162-847 ng/dL 11-62 ng/dL

Synonyms

  • Testosterone ultrasensitive

Stability (from collection to initiation)

Refrigerated serum on cells: 3 days
Refrigerated serum: 2 weeks
Frozen serum: 3 years

Reported

Test run twice per week. Turnaround time 2-8 days.

Additional Information

This assay is primarily intended for testing in pediatric patients with suspected or complex endocrine abnormalities or in settings where very low levels of testosterone are expected. For routine testing in adult patients, order "Testosterone, Total, Immunoassay" (test code TTES). 
 
Testing may be helpful in assessing testicular function in males and managing hirsutism, virilization in females. Measurement of testosterone by LC/MS/MS overcomes interferences and the known limitations of direct immunoassays in measurement of testosterone values in the lower range. These advantages are particularly relevant for assessment of testosterone in women, children/infants, and men on testosterone reduction therapy for prostate cancer. 
 
Reference ranges adapted from ARUP Laboratories (Clin Chem 2010; 56(7):1138-1147) based on patient correlation studies comparing this LC/MSMS method with the ARUP method and by in-house testing of 20 normal male and 20 normal female volunteers in the UCSF Chemistry laboratory at China Basin. 

CPT Codes

84403

LDT or Modified FDA

Yes

LOINC Codes

51005-7
Ordering

Available Stat

No

Performing Lab

China Basin Chemistry

Performed

Tuesday and Wednesday, reports next day

Methodology

LC/MS/MS

Reported

Test run twice per week. Turnaround time 2-8 days.

Additional Information

This assay is primarily intended for testing in pediatric patients with suspected or complex endocrine abnormalities or in settings where very low levels of testosterone are expected. For routine testing in adult patients, order "Testosterone, Total, Immunoassay" (test code TTES). 
 
Testing may be helpful in assessing testicular function in males and managing hirsutism, virilization in females. Measurement of testosterone by LC/MS/MS overcomes interferences and the known limitations of direct immunoassays in measurement of testosterone values in the lower range. These advantages are particularly relevant for assessment of testosterone in women, children/infants, and men on testosterone reduction therapy for prostate cancer. 
 
Reference ranges adapted from ARUP Laboratories (Clin Chem 2010; 56(7):1138-1147) based on patient correlation studies comparing this LC/MSMS method with the ARUP method and by in-house testing of 20 normal male and 20 normal female volunteers in the UCSF Chemistry laboratory at China Basin. 

Synonyms

  • Testosterone ultrasensitive
Collection

Sample Type

Serum

Collect

Red top

Amount to Collect

2 mL blood

Preferred Volume

1 mL serum

Minimum Volume

0.5 mL serum

Stability (from collection to initiation)

Refrigerated serum on cells: 3 days
Refrigerated serum: 2 weeks
Frozen serum: 3 years
Processing

Test Code

PTES

Test Group

Testosterone

Performing Lab

China Basin Chemistry

Specimen Preparation

Centrifuge samples aliquot serum and refrigerate

Preferred Volume

1 mL serum

Minimum Volume

0.5 mL serum

Stability (from collection to initiation)

Refrigerated serum on cells: 3 days
Refrigerated serum: 2 weeks
Frozen serum: 3 years
Result Interpretation

Units

ng/dL

Reference Interval

Age Males Females
Premature (26-28 weeks) 59-125 ng/dL 5-16 ng/dL
Premature (31-35 weeks) 37-198 ng/dL 5-22 ng/dL
Newborn 75-400 ng/dL 20-64 ng/dL
1-5 months 14-363 ng/dL < 20 ng/dL
6-24 months < 37 ng/dL < 9 ng/dL
2-3 years < 15 ng/dL < 20 ng/dL
4-5 years < 19 ng/dL < 30 ng/dL
6-7 years < 13 ng/dL < 7 ng/dL
8-9 years 2-8 ng/dL 1-11 ng/dL
10-11 years 2-165 ng/dL 3-32 ng/dL
12-13 years 3-619 ng/dL 6-50 ng/dL
14-15 years 31-733 ng/dL 6-52 ng/dL
16-17 years 158-826 ng/dL 9-58 ng/dL
18-39 years 300-1080 ng/dL 9-55 ng/dL
40-59 years 300-890 ng/dL 9-55 ng/dL
60 years and older 300-720 ng/dL 5-32 ng/dL
 
Tanner Stage Males Females
Tanner Stage I 2-15 ng/dL 2-17 ng/dL
Tanner Stage II 3-303 ng/dL 5-40 ng/dL
Tanner Stage III 10-851 ng/dL 10-63 ng/dL
Tanner Stage IV-V 162-847 ng/dL 11-62 ng/dL

Additional Information

This assay is primarily intended for testing in pediatric patients with suspected or complex endocrine abnormalities or in settings where very low levels of testosterone are expected. For routine testing in adult patients, order "Testosterone, Total, Immunoassay" (test code TTES). 
 
Testing may be helpful in assessing testicular function in males and managing hirsutism, virilization in females. Measurement of testosterone by LC/MS/MS overcomes interferences and the known limitations of direct immunoassays in measurement of testosterone values in the lower range. These advantages are particularly relevant for assessment of testosterone in women, children/infants, and men on testosterone reduction therapy for prostate cancer. 
 
Reference ranges adapted from ARUP Laboratories (Clin Chem 2010; 56(7):1138-1147) based on patient correlation studies comparing this LC/MSMS method with the ARUP method and by in-house testing of 20 normal male and 20 normal female volunteers in the UCSF Chemistry laboratory at China Basin. 
Administrative

CPT Codes

84403

LDT or Modified FDA

Yes

LOINC Codes

51005-7
Complete View

Available Stat

No

Test Code

PTES

Test Group

Testosterone

Performing Lab

China Basin Chemistry

Performed

Tuesday and Wednesday, reports next day

Methodology

LC/MS/MS

Collect

Red top

Amount to Collect

2 mL blood

Sample Type

Serum

Preferred Volume

1 mL serum

Minimum Volume

0.5 mL serum

Specimen Preparation

Centrifuge samples aliquot serum and refrigerate

Units

ng/dL

Reference Interval

Age Males Females
Premature (26-28 weeks) 59-125 ng/dL 5-16 ng/dL
Premature (31-35 weeks) 37-198 ng/dL 5-22 ng/dL
Newborn 75-400 ng/dL 20-64 ng/dL
1-5 months 14-363 ng/dL < 20 ng/dL
6-24 months < 37 ng/dL < 9 ng/dL
2-3 years < 15 ng/dL < 20 ng/dL
4-5 years < 19 ng/dL < 30 ng/dL
6-7 years < 13 ng/dL < 7 ng/dL
8-9 years 2-8 ng/dL 1-11 ng/dL
10-11 years 2-165 ng/dL 3-32 ng/dL
12-13 years 3-619 ng/dL 6-50 ng/dL
14-15 years 31-733 ng/dL 6-52 ng/dL
16-17 years 158-826 ng/dL 9-58 ng/dL
18-39 years 300-1080 ng/dL 9-55 ng/dL
40-59 years 300-890 ng/dL 9-55 ng/dL
60 years and older 300-720 ng/dL 5-32 ng/dL
 
Tanner Stage Males Females
Tanner Stage I 2-15 ng/dL 2-17 ng/dL
Tanner Stage II 3-303 ng/dL 5-40 ng/dL
Tanner Stage III 10-851 ng/dL 10-63 ng/dL
Tanner Stage IV-V 162-847 ng/dL 11-62 ng/dL

Synonyms

  • Testosterone ultrasensitive

Stability (from collection to initiation)

Refrigerated serum on cells: 3 days
Refrigerated serum: 2 weeks
Frozen serum: 3 years

Reported

Test run twice per week. Turnaround time 2-8 days.

Additional Information

This assay is primarily intended for testing in pediatric patients with suspected or complex endocrine abnormalities or in settings where very low levels of testosterone are expected. For routine testing in adult patients, order "Testosterone, Total, Immunoassay" (test code TTES). 
 
Testing may be helpful in assessing testicular function in males and managing hirsutism, virilization in females. Measurement of testosterone by LC/MS/MS overcomes interferences and the known limitations of direct immunoassays in measurement of testosterone values in the lower range. These advantages are particularly relevant for assessment of testosterone in women, children/infants, and men on testosterone reduction therapy for prostate cancer. 
 
Reference ranges adapted from ARUP Laboratories (Clin Chem 2010; 56(7):1138-1147) based on patient correlation studies comparing this LC/MSMS method with the ARUP method and by in-house testing of 20 normal male and 20 normal female volunteers in the UCSF Chemistry laboratory at China Basin. 

CPT Codes

84403

LDT or Modified FDA

Yes

LOINC Codes

51005-7

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