Specimen Collection Requirements
Serum, one 5.0 mL gold (SST) or 7.0 mL red top tube
Supply Item Number - 101235 or 101192
Allow serum to clot completely at room temperature (minimum – SST: 30 minutes, red top tubes: 60 minutes). Centrifuge and separate serum from cells ASAP.
0.3 mL Serum (0.8 mL minimum whole blood draw)
Grossly hemolyzed or plasma specimens
AFTER SEPARATION FROM CELLS: Room Temperature (18-26°C): 8 hours; Refrigerated (2-8°C): 48 hours; Frozen (≤ -20°C): 2 months
ADULT: 3.1-22.4 µg/dL
For day active persons:
Morning: 4.3-22.4 µg/dL
Evening: 3.1-16.7 µg/dL
The evening sample is typically ≤50% of the morning sample.
Monday, February 15, 2021 06:37:06 PM
Client Services: 503-413-1234