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Laboratory Test Directory

PTH Intact


Name Method Department Units
PTH with Calcium Chemiluminescent Microparticle Immunoassay (CMIA)
Core Lab, Endocrinology pg/mL

Battery Members

Intact Parathyroid Hormone (PTHN) and Calcium (Ca)

Specimen Requirements

Plasma Spun, Serum Spun

Container Type Container Size Specimen Volume

Green tube (Lithium heparin), No Gel

3 mL 1 mL

Red tube, (no anticoagulant), No Gel

3 mL 1 mL

Room temperature - 4 hour(s)
Refrigerated - 2 day(s)
Frozen - 6 month(s)

Specimen Preparation

  • Centrifuge, remove plasma and refrigerate
  • If delay in transport is greater than 24 hours, freeze

Reasons for Rejection

  • Collected in tube with gel separator
  • Delayed or improper handling
  • Gross hemolysis
  • Wrong collection tube


If a separate Calcium is requested by physician, it is not necessary for lab personnel to credit it out as there is a program in place to credit the duplicate testing.

CPT Code

  • 83970
  • 82310