Navy blue metal free vial/tube (no additive) 

Immediately following collection, mix sample thoroughly by gently inverting 8 - 10, times to prevent clotting

1. Allow sample to clot 
2. Spin within 45 min of sample collection
3. Carefully pour the serum into a Metal free transport vial/tube

Metal free transport vial/tube

 Navy blue metal free vial/tube with EDTA

Immediatley following collection, mix sample by inverting 8 - 10 times to prevent clotting

1. Spin within 45 min of sample collection
2. Carefully pour the plasma into a Metal free transport vial/tube

Refrigerated - 28 days

Ambient - 28 days

Frozen - 28 days

Freeze/thaw cycles - stable x4

• Certified metal-free plastic transport tube not submitted
• Unspun royal blue-top tube from which the plasma or serum has not been removed
• Gel-barrier tube

Inductively coupled plasma/mass spectrometry (ICP/MS)

44 - 115 µg/dL

Medical necessity