Unit Code 83817:
Calcium Sensing Receptor (CASR) Gene Mutation Screening, Biochemical and Genetic
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.
Blood, serum, and urine are required for this test.
Blood
"Calcium Sensing Receptor (CASR) Mutation Screening
Patient Information Sheet" (Supply T551 or see Special
Instructions) is required for all orders. If not ordering
electronically, please submit the above information sheet along
with a "Molecular Genetics Request Form" (Supply T245) with
the specimens. An "Informed Consent for DNA Testing"
(Supply T576) is available. See Special Instructions for a copy
of the form. An "Informed Consent for DNA Testing" (Supply T576)
is available. See Special Instructions for a copy of the form.
Specimen must arrive within 96 hours of draw.
Draw blood in a lavender-top (EDTA) tube(s) or a yellow-top
(ACD) tube(s), and send 2 mL of EDTA or ACD whole blood in
the original VACUTAINER(S). Invert several times to mix blood.
Forward unprocessed whole blood promptly at ambient
temperature.
Note: Label specimen appropriately (blood).
Serum
Draw blood in a plain, red-top tube(s) or a serum gel tube(s)
from a fasting patient. Spin down, separate from clot, and
send 2 mL of serum frozen in plastic vial.
Note: 1. Patient's age and sex are required on request
form for processing.
2. These specimens cannot be shared for other tests.
3. Label specimens appropriately (serum).
Urine
10 mL from a random urine collection as follows:
1. Collect in a clean, plastic urine collection container. No
preservative.
2. Divide specimen into 2 plastic, 13-mL urine tubes or clean,
plastic aliquot containers with no metal cap or glued insert.
3. See "Metals Analysis-Collection and Transport" in Special
Instructions for complete instructions.
4. Send specimens refrigerated.
Note: Label specimens appropriately (urine).
New York Clients: Informed consent is required.
Please document on the request form or electronic
order that a copy is on file. An "Informed Consent
for DNA Testing" (Supply T576) is available. See
Special Instructions for a copy of the form.
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.
Blood: 0.5 mL
Serum: 0.5 mL for PTH and minerals
Urine: 10 mL
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.
Transport Temperature Provides a description of the temperatures required to transport a specimen to the laboratory. Alternate acceptable temperature(s) and unacceptable transport temperature(s) are also included. The preferred transport temperature is listed first, followed by the alternate acceptable temperature (if appropriate) and lastly, the unacceptable transport temperature(s).
Varies
Ambient\Refrig OK\Frozen NO- Blood
Frozen\Refrig OK\Ambient NO - Serum
Refrig\Frozen OK\Ambient NO - Urine
Reject Due To Identifies specimen types and conditions that may cause the specimen to be rejected
Hemolysis: No, slight/Yes, gross
Lipemia: No
Urine
Hemolysis: NA
Lipemia: NA
Icteric:
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