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HelpTest Code FFTFT Testosterone, Free (Dialysis) and Total, MS
Specimen Required
Collection Container/Tube:
Preferred: Red top
Acceptable: Serum gel
Submission Container/tube: Plastic vial
Specimen Volume: 1.8 mL
Collection Instructions:
1. Allow blood to clot at room temperature. Centrifuge and immediately aliquot 1.8 mL of serum into a plastic vial.
2. Send refrigerate
Specimen Stability Information: Refrigerated (preferred) 21 days/Ambient 7 days/Frozen 2 years
Useful For
Helpful in assessing testicular function in prepubescent hypogonadal males and in managing hirsutism and virilization in females
Reporting Name
Testosterone Free and TotalSpecimen Type
Serum RedSpecimen Minimum Volume
0.9 mL
Specimen Stability Information
| Specimen Type | Temperature | Time |
|---|---|---|
| Serum Red | Refrigerated (preferred) | 21 days |
| Ambient | 7 days | |
| Frozen | ||
Reject Due To
| Gross hemolysis | Reject |
| Gross lipemia | Reject |
Reference Values
TESTOSTERONE, TOTAL, MS
|
Age |
Males (ng/dL) |
Females (ng/dL) |
|
Cord blood |
17-61 |
16-44 |
|
1-10 days |
≤187 |
≤24 |
|
11-30 days |
Not established |
Not established |
|
1-2 months |
72-344 |
≤17 |
|
3-4 months |
≤201 |
≤12 |
|
5-6 months |
≤59 |
≤13 |
|
7-11 months |
≤16 |
≤11 |
|
1-5 years |
≤5 |
≤8 |
|
6-7 years |
≤25 |
≤20 |
|
8-10 years |
≤42 |
≤35 |
|
11 years |
≤260 |
≤40 |
|
12-13 years |
≤420 |
≤40 |
|
14-17 years |
≤1000 |
≤40 |
|
≥ 18 years |
250-1100 |
2-45 |
TESTOSTERONE, FREE
|
Age |
Males (pg/mL) |
Females (pg/mL) |
|
0-4 years |
Not established |
Not established |
|
5-9 years |
<5.4 |
0.2-5.0 |
|
10-13 years |
0.7-52.0 |
0.1-7.4 |
|
14-17 years |
18.0-111.0 |
0.5-3.9 |
|
18-69 years |
35.0-155.0 |
0.1-6.4 |
|
70-89 years |
30.0-135.0 |
0.2-3.7 |
|
>89 years |
Not established |
Not established |
Day(s) Performed
Monday through Sunday
Report Available
6 to 9 daysPerforming Laboratory
Quest Diagnostics Nichols InstituteTest Classification
This test was developed and its analytical performance characteristics have been determined by Quest Diagnostics. It has not been cleared or approved by FDA. This assay has been validated pursuant to the CLIA regulations and is used for clinical purposes.CPT Code Information
84402
84403
LOINC Code Information
| Test ID | Test Order Name | Order LOINC Value |
|---|---|---|
| FFTFT | Testosterone Free and Total | Not Provided |
| Result ID | Test Result Name | Result LOINC Value |
|---|---|---|
| Z6077 | Testosterone, Total, MS | 2986-8 |
| Z6078 | Testosterone, Free, (Dialysis) | 2991-8 |