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Serum or plasma
4.0 ml Gold-top serum separator or 3.0 ml EDTA Lavender stopper tube (Collect EDTA for patients in surgery)
2 ml serum or plasma, minimum 0.5 ml
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.
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.
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.
If not centrifuged within 2 hours of collection. Frozen serum or plasma
Daily, Monday - Sunday
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