TEST DIRECTORY | MIDx Labs

FOLLICLE STIMULATING HORMONE (FSH)

Pituitary hormone used to assess fertility, menopause, or gonadal function.

LIS TEST CODE: FSH

CPT CODE: 83001

ALIASES: FSH, Pituitary Gonadotropins

METHODOLOGY: Chemiluminescent Microparticle Immunoassay (CMIA)

SPECIMEN:

- Type: Serum

- Container: Gold Top (SST) Vacutainer

- Minimum Volume Required: 1 mL

- Storage/Handling: Allow 30 minutes for blood to clot, then centrifuge specimen at 3500 RPM for 10 minutes. Maintain specimen in the refrigerator or in the freezer until testing can be performed.

NOTE: If freezing is required to preserve stability, transfer serum into a separate plastic screw-cap transport container.

- Stability:

Room Temperature (20-25 °C): Not Accepted

Refrigerated (2-8 °C): 7 days

Frozen (-20 °C or colder): 1 year; avoid multiple freeze/thaw cycles.

- Turnaround Time: 24 hours from receipt.

Special Instructions: If testing will be delayed for more than 24 hours, remove serum from the separator gel and transfer into a separate plastic screw-cap transport container.

REJECTION REASONS: QNS, Gross Hemolysis, Gross Lipemia, Contamination, Stability Violation, Expired Container, Incorrect Container

REFERENCE RANGES:

Males (mIU/mL)

1 - 5 years of age: < 2.0

6 - 10 years of age: < 2.4

11 - 15 years of age: 0.6 - 6.9

16 - 18 years of age: 0.7 - 9.6

>= 19 years of age: 1.2 - 15.8

Females (mIU/mL)

1 - 10 years of age: 0.5 - 6.0

11 - 15 years of age: 0.9 - 8.9

16 - 18 years of age: 0.7 - 9.6

>= 19 years of age:

Premenopausal:
Follicular: 2.9 - 14.6 mIU/mL
Midcycle: 4.7 - 23.2 mIU/mL
Luteal: 1.4 - 8.9 mIU/mL

Postmenopausal: 16.0 - 157.0 mIU/mL