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PTH (Parathyroid Hormone)

SIM

50066 

CPT

83970 

Synonyms

PTH 

Specimen Type

Serum or plasma 

Container

4.0 ml Gold-top serum separator or 
3.0 ml EDTA Lavender stopper tube (Collect EDTA for patients in surgery) 

Collection Instructions

None

Volume

2 ml serum or plasma, minimum 0.5 ml

Additional Information

Heterophilic antibodies in human serum can react with reagent immunoglobulins, interfering with in vitro immunoassays.  Patients routinely exposed to animals or to animal serum products can be prone to this interference and anomalous values may be observed.  Additional information may be required for diagnosis.

Patient Preparation

none

Specimen Processing Instructions

Serum:  Allow to clot.  Centrifuge at 3380 rpm’s (±100) for a minimum of 10 minutes

Plasma:  Centrifuge at 3380 rpm’s (±100) for a minimum of 10 minutes

Centrifuge within 2 hours of collection.

Do Not freeze serum or plasma.

Transport Requirements

Refrigerated

Specimen Stability

Room temperature:  4 hours   Refrigerated: 48 hours; It is also extremely important to ensure that patient samples have beenhandled and stored correctly.  Incorrect handling of samples will result in a lost of intact PTH.  

Rejection Criteria

If not centrifuged within 2 hours of collection. 
Frozen serum or plasma 

Reference Range

19-88 pg/ml

Critical Value

none 

Test Includes

PTH 

Methodology

Chemiluminescent technology 

Testing Frequency

Daily, Monday - Sunday 

 

Reviewed By

Sandy Hammett 

Reviewed Date

1/24/2018 

Supplemental

 

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