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TEST ID TESTTTL TESTOSTERONE TOTAL

Important Note

NRLS accepts gold tubes for this test but all other testosterone testing referred to Mayo requires a RED tube. 

Performing Laboratory

NRLS-Core Chemistry

Specimen Type

Serum

Specimen Required

Container/Tube:
Preferred: Gold
Acceptable: Tiger top, Red top
Specimen Volume: 1.0 mL

Collection Instructions:

Serum gel tubes should be fully clotted and centrifuged within 2 hours of collection. 4 hours is acceptable.
Red-top tubes should be fully clotted, centrifuged and aliquoted within 2 hours of collection.4 hours is acceptable.

Specimen Minimum Volume

0.5 mL

Specimen Stability Information

Specimen Type Temperature Time 
Serum Refrigerated(preferred) 48 hours
  Ambient 8 hours
  Frozen 2 months

Reference Values

An interpretive report will be provided