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Lab Test Dictionary

Testosterone, Free (18944)

Methodology

Chromatography/Mass Spectrometry; Calculation (CALC); ICMA


Specimen Type

Serum or Plasma

Performing Lab

Quest Diagnostics San Juan Capistrano


Epic ID

Other Reference Test

Lab Test Days

Daily

Standard TAT

4 Days


Collection Information

Specimen Required

3-6 mL Blood

Container Type

Red Top (No Additive)

Collection Instructions

Plasma collected in: Sodium heparin (green-top) tube or lithium heparin (green-top) tube is also acceptable.


Processing Information - Lab Use Only

Transport Temperature

Refrigerate-OK/Frozen-OK/Ambient-OK

Specimen Stability

Room Temp: 7 Days; Refrigerated: 7 Days; Frozen: 2 Years

Rejection Criteria

Gross hemolysis; Grossly lipemic

Test Volume Required

2.8 mL Serum or Plasma

Minimum Test Volume

1.3 mL Serum or Plasama

Processing Instructions

Indicate serum or plasma in flag comments, on specimen and on batch sheet. Red-top tube (no gel): Allow blood to clot at room temperature. Centrifuge to separate the serum from the cells and immediately pour serum into a plastic transport tube. Serum separator tube (SST): Allow blood to clot at room temperature, centrifuge, and remove serum from the gel immediately (not to exceed 48 hours) by pouring serum into a plastic transport tube.


CPT Codes

84402


Revised

5/17/24

Initials

SA