Sign in →

Test Code LABFROS2 Fructose, Qualitative, Semen

Additional Codes

Test Name in EPIC EPIC Test Code Mnemonic Mayo Test ID
FRUCTOSE, QUALITATIVE, SEMEN LABFROS2 FROS2 FROS2

 


Specimen Required


Patient Preparation: Patient should have 2 to 7 days of sexual abstinence at the time of semen collection.

 

Submit only 1 of the following specimens:

 

Specimen Type: Semen

Collection Container/Tube: Sterile container

Submission Container/Tube: Plastic container

Specimen Volume: Total ejaculate

Collection Instructions: Do not dilute specimen. Freeze specimen at -20° C.

 

Specimen Type: Seminal plasma

Container/Tube: Plastic vial

Specimen Volume: 0.5 mL

Collection Instructions:

1. After semen collection, wait 30 to 40 minutes until the semen is liquefied, then centrifuge the semen for 10 minutes at maximum centrifuge speed.

2. Remove top 3/4 of specimen with a pipet and place in a plastic vial. Freeze specimen at -20° C.

3. Discard remainder of centrifuged specimen.


Useful For

Establishing the origin of azoospermia in patients with azoospermia and low volume ejaculates

Method Name

Qualitative

Reporting Name

Qualitative Fructose,Semen

Specimen Type

Semen

Specimen Minimum Volume

0.5 mL

Specimen Stability Information

Specimen Type Temperature Time Special Container
Semen Frozen

Reject Due To

All specimens will be evaluated at Mayo Clinic Laboratories for test suitability.

Clinical Information

Fructose is produced in the male reproductive tract by the seminal vesicles and is released into the semen during ejaculation. Fructose is the energy source for sperm motility.

Reference Values

Positive

Interpretation

A positive (indicated by color change) fructose is considered normal.

 

A semen specimen that contains no sperm (azoospermia) and is fructose negative may indicate an absence of the seminal vesicles, absence of the vas deferens in the area of the seminal vesicles, or an obstruction at the level of the seminal vesicles.

Cautions

This test should be performed in conjunction with a semen analysis to determine semen volume, pH, sperm concentration, motility, and grade of forward progression.

 

Fructose test must be on a separate ejaculate.

Method Description

A qualitative method using resorcinol will detect the presence or absence of fructose.(Keel BA, Webster BW: Handbook of the Laboratory Diagnosis and Treatment of Infertility. CRC Press: 1990:49)

Day(s) Performed

Friday

Report Available

1 to 7 days

Specimen Retention Time

Not retained

Performing Laboratory

Mayo Clinic Laboratories in Rochester

Test Classification

This test was developed and its performance characteristics determined by Mayo Clinic in a manner consistent with CLIA requirements. It has not been cleared or approved by the US Food and Drug Administration.

CPT Code Information

82757

LOINC Code Information

Test ID Test Order Name Order LOINC Value
FROS2 Qualitative Fructose,Semen 13943-6

 

Result ID Test Result Name Result LOINC Value
FRUCS Fructose, Semen/Seminal P 13943-6
CLSM Collection Site 56816-2
VOLSM Semen Volume 3160-9
CMT49 Comment 48767-8