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Laboratory Test Directory

Folate, Serum (Updated)

Components

Name Method Department Units
Folate, Serum Chemiluminescence
Core Lab, Endocrinology ng/mL

Battery Members

Folate

Specimen Requirements

Whole blood

Container Type Container Size Specimen Volume
Preferred

Red tube, (no anticoagulant), No Gel

3 mL 2 mL
Alternate

Red tube, (no anticoagulant), No Gel

Micro sample tube 1 mL
Alternate

Gold tube, (SST) with Gel

3.5 mL 2 mL
Alternate

Green tube (Lithium heparin), No Gel

3 mL 2 mL
Alternate

Green tube (Lithium heparin), No Gel

Micro sample tube 1 mL
Alternate

Green tube (Lithium heparin), with Gel

3 mL 2 mL
Alternate

Green tube (Lithium heparin), with Gel

Micro sample tube 1 mL
Stability

Room temperature - 1 hour(s)
Refrigerated - 8 hour(s)

Specimen Preparation

  • Protect specimen from light. Cover with foil
  • If delay in transport greater than 1 hour, refrigerate
  • Ship entire specimen to laboratory refrigerated
  • Transport to laboratory as soon as possible

Serum Spun, Plasma Spun

Container Type Container Size Specimen Volume
Preferred

Red tube, (no anticoagulant), No Gel

3 mL 1 mL
Alternate

Red tube, (no anticoagulant), No Gel

Micro sample tube 1 mL
Alternate

Gold tube, (SST) with Gel

3.5 mL 1 mL
Alternate

Green tube (Lithium heparin), No Gel

3 mL 1 mL
Alternate

Green tube (Lithium heparin), No Gel

Micro sample tube 1 mL
Alternate

Green tube (Lithium heparin), with Gel

3 mL 1 mL
Alternate

Green tube (Lithium heparin), with Gel

Micro sample tube 1 mL
Stability

Room temperature - 1 hour(s)
Refrigerated - 72 hour(s)
Frozen - 8 week(s)

Specimen Preparation

  • Protect specimen from light. Cover with foil
  • Centrifuge within 1 hour, separate supernatant and refrigerate
  • Ship entire specimen to laboratory refrigerated
  • Transport to laboratory as soon as possible

Reasons for Rejection

  • Frozen whole blood
  • Gross hemolysis
  • Gross icterus
  • Gross lipemia
  • Wrong collection tube
  • Wrong type of specimen

Comments

Sample should be a fasting sample.

CPT Code

  • 82746