Available Stat

No

Performing Lab

China Basin Chemistry

Performed

Tuesday and Wednesday, reports next day

Methodology

Total testosterone by LC-MS/MS, free testosterone by calculation

Reported

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

Additional Information

Reference ranges adopted from Quest Diagnostics based on correlation studies comparing our method with the Quest method and by in-house testing of 24 normal male and 31 normal female volunteers in the UCSF Laboratory.

Includes determination of total testosterone.

Free: To convert pg/mL to pmol/L (SI units) multiply by 3.467.

Total: To convert ng/dL to nmol/L (SI units) multiply by 0.0347.

Synonyms

  • Free testosterone

Sample Type

Serum

Collect

Red top

Amount to Collect

2 mL (blood)

Preferred Volume

1 mL (serum)

Minimum Volume

0.75 mL (serum)

Stability (from collection to initiation)

Refrigerated serum: 8 days
Frozen serum: 3 months

Test Code

FTCP

Test Group

Testosterone

Performing Lab

China Basin Chemistry

Specimen Preparation

Refrigerate serum.

Preferred Volume

1 mL (serum)

Minimum Volume

0.75 mL (serum)

Stability (from collection to initiation)

Refrigerated serum: 8 days
Frozen serum: 3 months

Units

pg/mL (free) and ng/dL (total)

Reference Interval

Testosterone, Total:
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



Total testosterone reference ranges by pubertal stage :
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



Testosterone, Free:
Age Males Females
5 -9.9 years <= 5.3 pg/mL 0.2-5.0 pg/mL
10-13.9 years 0.7-52.0 pg/mL 0.1-7.4 pg/mL
14-17.9 years 18-111 pg/mL 0.5-3.9 pg/mL
18-69 years 35-155 pg/mL 0.1-6.4 pg/mL

Additional Information

Reference ranges adopted from Quest Diagnostics based on correlation studies comparing our method with the Quest method and by in-house testing of 24 normal male and 31 normal female volunteers in the UCSF Laboratory.

Includes determination of total testosterone.

Free: To convert pg/mL to pmol/L (SI units) multiply by 3.467.

Total: To convert ng/dL to nmol/L (SI units) multiply by 0.0347.

CPT Codes

84402 and 84403

LOINC Codes

2991-8 and 2986-8

Available Stat

No

Test Code

FTCP

Test Group

Testosterone

Performing Lab

China Basin Chemistry

Performed

Tuesday and Wednesday, reports next day

Methodology

Total testosterone by LC-MS/MS, free testosterone by calculation

Collect

Red top

Amount to Collect

2 mL (blood)

Sample Type

Serum

Preferred Volume

1 mL (serum)

Minimum Volume

0.75 mL (serum)

Specimen Preparation

Refrigerate serum.

Units

pg/mL (free) and ng/dL (total)

Reference Interval

Testosterone, Total:
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



Total testosterone reference ranges by pubertal stage :
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



Testosterone, Free:
Age Males Females
5 -9.9 years <= 5.3 pg/mL 0.2-5.0 pg/mL
10-13.9 years 0.7-52.0 pg/mL 0.1-7.4 pg/mL
14-17.9 years 18-111 pg/mL 0.5-3.9 pg/mL
18-69 years 35-155 pg/mL 0.1-6.4 pg/mL

Synonyms

  • Free testosterone

Stability (from collection to initiation)

Refrigerated serum: 8 days
Frozen serum: 3 months

Reported

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

Additional Information

Reference ranges adopted from Quest Diagnostics based on correlation studies comparing our method with the Quest method and by in-house testing of 24 normal male and 31 normal female volunteers in the UCSF Laboratory.

Includes determination of total testosterone.

Free: To convert pg/mL to pmol/L (SI units) multiply by 3.467.

Total: To convert ng/dL to nmol/L (SI units) multiply by 0.0347.

CPT Codes

84402 and 84403

LOINC Codes

2991-8 and 2986-8
Ordering

Available Stat

No

Performing Lab

China Basin Chemistry

Performed

Tuesday and Wednesday, reports next day

Methodology

Total testosterone by LC-MS/MS, free testosterone by calculation

Reported

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

Additional Information

Reference ranges adopted from Quest Diagnostics based on correlation studies comparing our method with the Quest method and by in-house testing of 24 normal male and 31 normal female volunteers in the UCSF Laboratory.

Includes determination of total testosterone.

Free: To convert pg/mL to pmol/L (SI units) multiply by 3.467.

Total: To convert ng/dL to nmol/L (SI units) multiply by 0.0347.

Synonyms

  • Free testosterone
Collection

Sample Type

Serum

Collect

Red top

Amount to Collect

2 mL (blood)

Preferred Volume

1 mL (serum)

Minimum Volume

0.75 mL (serum)

Stability (from collection to initiation)

Refrigerated serum: 8 days
Frozen serum: 3 months
Processing

Test Code

FTCP

Test Group

Testosterone

Performing Lab

China Basin Chemistry

Specimen Preparation

Refrigerate serum.

Preferred Volume

1 mL (serum)

Minimum Volume

0.75 mL (serum)

Stability (from collection to initiation)

Refrigerated serum: 8 days
Frozen serum: 3 months
Result Interpretation

Units

pg/mL (free) and ng/dL (total)

Reference Interval

Testosterone, Total:
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



Total testosterone reference ranges by pubertal stage :
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



Testosterone, Free:
Age Males Females
5 -9.9 years <= 5.3 pg/mL 0.2-5.0 pg/mL
10-13.9 years 0.7-52.0 pg/mL 0.1-7.4 pg/mL
14-17.9 years 18-111 pg/mL 0.5-3.9 pg/mL
18-69 years 35-155 pg/mL 0.1-6.4 pg/mL

Additional Information

Reference ranges adopted from Quest Diagnostics based on correlation studies comparing our method with the Quest method and by in-house testing of 24 normal male and 31 normal female volunteers in the UCSF Laboratory.

Includes determination of total testosterone.

Free: To convert pg/mL to pmol/L (SI units) multiply by 3.467.

Total: To convert ng/dL to nmol/L (SI units) multiply by 0.0347.
Administrative

CPT Codes

84402 and 84403

LOINC Codes

2991-8 and 2986-8
Complete View

Available Stat

No

Test Code

FTCP

Test Group

Testosterone

Performing Lab

China Basin Chemistry

Performed

Tuesday and Wednesday, reports next day

Methodology

Total testosterone by LC-MS/MS, free testosterone by calculation

Collect

Red top

Amount to Collect

2 mL (blood)

Sample Type

Serum

Preferred Volume

1 mL (serum)

Minimum Volume

0.75 mL (serum)

Specimen Preparation

Refrigerate serum.

Units

pg/mL (free) and ng/dL (total)

Reference Interval

Testosterone, Total:
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



Total testosterone reference ranges by pubertal stage :
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



Testosterone, Free:
Age Males Females
5 -9.9 years <= 5.3 pg/mL 0.2-5.0 pg/mL
10-13.9 years 0.7-52.0 pg/mL 0.1-7.4 pg/mL
14-17.9 years 18-111 pg/mL 0.5-3.9 pg/mL
18-69 years 35-155 pg/mL 0.1-6.4 pg/mL

Synonyms

  • Free testosterone

Stability (from collection to initiation)

Refrigerated serum: 8 days
Frozen serum: 3 months

Reported

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

Additional Information

Reference ranges adopted from Quest Diagnostics based on correlation studies comparing our method with the Quest method and by in-house testing of 24 normal male and 31 normal female volunteers in the UCSF Laboratory.

Includes determination of total testosterone.

Free: To convert pg/mL to pmol/L (SI units) multiply by 3.467.

Total: To convert ng/dL to nmol/L (SI units) multiply by 0.0347.

CPT Codes

84402 and 84403

LOINC Codes

2991-8 and 2986-8

×
Learn More Remind Me Later Dismiss