Laboratory Medicine

Test catalogue

Dihydrotestosterone
Test Name Dihydrotestosterone (DIHY, DHT)
Specimen Type / Requirements Container Type = 1 Gold Top (SST) Recommended volume = 1.0 mL serum Minimum volume = 450 uL serum Tubes must fill to at least ½ or greater of its vacuum capacity
Specimen Handling Collection Instructions: Collect sample in gold top tube (SST). Write your initials, date and time of collection on the collection label. Laboratory Staff Instructions Centrifuge and separate serum from cells within 2hrs of collection. Store frozen in -30C freezer near seperation bench. Rejection Criteria Gross hemolysis, unlabeled or specimen of non sufficient quantity. Stability: Refrigerated: 7 days, frozen: 3 months, stable up to 6 freeze/thaws Sample Rejection Criteria: Unlabeled or specimen of non sufficient quantity.
Required Documentation
Turnaround Time (TAT) 7 days	Test Utilization
Reference Value Female: Cord Blood <=0.17 nmol/L <=6 months <=4.13 nmol/L Tanner Stages: Stage I (>6months and prepubertal) <=0.17 nmol/L Stage II - V: <=1.03 nmol/L 20 – 55 years <=1.03 nmol/L >55 years <=0.44 nmol/L	Male: Cord Blood: <=0.34 nmol/L <=6 months: <=4.13 nmol/L Tanner Stages: Stage I (>6months and prepubertal): <=0.17nmol Stage II: <=0.69 nmol/L Stage III: 0.28 – 1.14 nmol/L Stage IV: 0.76 – 1.79 nmol/L Stage V: 0.83 – 2.24 nmol/L >19 years: 0.39 – 3.29 nmol/L
Test Code DIHY	Methodology LCMS
Testing Location SMH-Biochemistry	Other Information Last Updated: April 03, 2023

Dihydrotestosterone

Test Name

Dihydrotestosterone (DIHY, DHT)

Specimen Type / Requirements

Container Type = 1 Gold Top (SST)

Recommended volume = 1.0 mL serum

Minimum volume = 450 uL serum

Tubes must fill to at least ½ or greater of its vacuum capacity

Specimen Handling

Collection Instructions: Collect sample in gold top tube (SST). Write your initials, date and time of collection on the collection label.

Laboratory Staff Instructions Centrifuge and separate serum from cells within 2hrs of collection. Store frozen in -30C freezer near seperation bench.

Rejection Criteria Gross hemolysis, unlabeled or specimen of non sufficient quantity.

Stability: Refrigerated: 7 days, frozen: 3 months, stable up to 6 freeze/thaws

Sample Rejection Criteria: Unlabeled or specimen of non sufficient quantity.

Required Documentation

Turnaround Time (TAT)

7 days

Test Utilization

Reference Value

Female:

Cord Blood <=0.17 nmol/L
<=6 months <=4.13 nmol/L

Tanner Stages:
Stage I (>6months and prepubertal) <=0.17 nmol/L
Stage II - V: <=1.03 nmol/L

20 – 55 years <=1.03 nmol/L
>55 years <=0.44 nmol/L

Male:

Cord Blood: <=0.34 nmol/L
<=6 months: <=4.13 nmol/L

Tanner Stages:
Stage I (>6months and prepubertal): <=0.17nmol
Stage II: <=0.69 nmol/L
Stage III: 0.28 – 1.14 nmol/L
Stage IV: 0.76 – 1.79 nmol/L
Stage V: 0.83 – 2.24 nmol/L

>19 years: 0.39 – 3.29 nmol/L

Test Code

DIHY

Methodology

LCMS

Testing Location

SMH-Biochemistry

Other Information

Last Updated: April 03, 2023