Test ID: PTHFN
Parathyroid Hormone, Fine-Needle Aspiration Biopsy (FNAB)-Needle Wash
Specimen Type 
Describes the specimen type needed for testing
Specimen Required Defines the optimal specimen. This field describes the type of specimen required to perform the test and the preferred volume to complete testing. The volume allows automated processing, fastest throughput and, when indicated, repeat or reflex testing.
Collection Container/Tube: Sterile vial
Submission Container/Tube: Plastic vial
Specimen Volume: 1-1.5 mL
Collection Instructions: After collection of the cytology specimens and expulsion of the material for smear or CytoTrap process as follows:
1. Wash/rinse each FNA needle from a single biopsied area with 0.1 to 0.5 mL of normal saline.
2. Pool each wash from a single biopsied area into 1 vial.
3. If more than 1 area is biopsied, each biopsy area should be submitted as a separate specimen under a separate order. Clearly identify each specimen.
4. Inspect the specimen as follows:
a. If the specimen shows visible blood or tissue contamination, centrifuge the specimen. Transfer the supernatant to a new plastic vial. Freeze specimen.
b. If specimen is clear, freeze specimen in plastic vial.
c. Specimen should be frozen within 4 hours of collection.
Specimen Minimum Volume Defines the amount of specimen required to perform an assay once, including instrument and container dead space. Submitting the minimum specimen volume makes it impossible to repeat the test or perform confirmatory or perform reflex testing. In some situations, a minimum specimen volume may result in a QNS (quantity not sufficient) result, requiring a second specimen to be collected.
Reject Due To Identifies specimen types and conditions that may cause the specimen to be rejected
| Hemolysis | Mild reject; Gross reject |
| Lipemia | NA |
| Icterus | Mild OK; Gross reject |
| Other | NA |
Specimen Stability Information Provides a description of the temperatures required to transport a specimen to the laboratory. Alternate acceptable temperature(s) are also included.
| Specimen Type | Temperature | Time |
|---|---|---|
| Fine Needle Wash | Frozen (preferred) | 30 days |
| Refrigerated | 4 hours |
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