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HelpTest Code S Osmol CRMC OSMOLALITY – SERUM
Patient Preparation
No special patient preparation required
Collection Method
Venous collection
Minimum Volume
1.0 mL
Container
Gold Top Serum Separator
Preferred Specimen
Gold Top / Serum
Acceptable Specimen(s)
Serum: Red or Gold top
Reference or Target Ranges
|
Serum |
|
|
Neonate (0-7 Days) : |
266-295 mOsm/Kg |
|
Child, Adult: |
275-295 mOsm/Kg |
|
Adult (>60 years) : |
280-301 mOsm/Kg |
Reportable Units
Serum: mOsm/Kg
Critical Value
Not defined for this assay
Reasons for Rejection
|
Other: |
QNS, contaminated, improperly labeled, improper specimen type |
Specimen Stability
|
Ambient |
3 Hours |
|
Refrigerated |
10 Hours |
|
Frozen |
1 Week |
Performance Information
|
Days and Time Performed |
24/7 |
|
Expected Turn Around Time |
Stat: 1 Hour, Routine: 4 Hours |
|
Stat Availability |
Yes |
|
Performing Bench |
CRMC Chemistry |
Methodology/Method Description
Advanced Instruments Micro-Osmometer Model 3320 – Uses the technique of freezing-point depression to measure osmolality
CPT Codes
83930