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Test Code MG Magnesium

Specimen Type

Plasma

Container/Tube

Li-Heparin  Mint Green Top

Offsite Collection Instructions

1. Collect sample following standard collection methods
2. Within 2 hours of collection the sample must be spun and
aliquoted
3. Transport refrigerated  (2 – 8C).

Turnaround Time

4 hours

Test Includes

N/A

Preferred Volume

0.5 mL

UCMC Collection Instructions

1. Collect sample following standard collection methods
2. Within 2 hours of collection the sample must be received in
Laboratory Service Center
3. Transport room temperature (15 – 25C).

STAT Turnaround Time

1 hour

Test Usage

This assay is used for diagnosing and monitoring hypomagnesemia
(magnesium deficiency) and hypermagnesemia (magnesium excess).

Critical Results

<1.0 mg/dL
>8.0 mg/dL

Test Limitations

Chelating anticoagulants such as EDTA,
fluoride and oxalate must be avoided.

Additional Information

N/A

Fee Code

30183735

Synonyms

N/A

Specimen Minimum Volume

0.2 mL

DAY(S) AND TIME(S) PERFORMED

24 hours, 7 days a week including holidays.

STAT DAY(S) AND TIME(S) PERFORMED

Avaliable

CPT

83735

Method Name

Colorimetric Endpoint Method
Spectrophotometric

Reference Values

1.6 – 2.5 mg/dL

Reject Due To

Whole blood/unspun samples greater than 6 hours will be
rejected.

Included in Additional codes

N/A

Coverage Information

N/A

Stability: Room Temp

7 days

Stability: Refrigerated

7 days

Stability: Frozen

1 year