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Test Code FFTFTM Testosterone, Free (Dialysis) and Total, MS

Additional Codes

Mayo FFTFT
Epic ID LAB4578

 

Specimen Type

Serum Red


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


Specimen Minimum Volume

0.9 mL

Specimen Stability Information

Specimen Type Temperature Time
Serum Red Refrigerated (preferred) 21 days
  Ambient  7 days
  Frozen 
UPH Waterloo Region Lab Test Catalog Note:

Transport refrigerated.

Reject Due To

Gross hemolysis Reject
Gross lipemia Reject

Performing Laboratory

Quest Diagnostics Nichols Institute

Method Name

Chromatography/Mass Spectrometry, Equilibrium Dialysis, Calculation (CALC)

Useful For

Helpful in assessing testicular function in prepubescent hypogonadal males and in managing hirsutism and virilization in females

Day(s) Performed

Monday through Sunday

Report Available

6 to 9 days

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

CPT Code Information

84402

84403