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HelpTest ID NBLD0320 Specific Gravity, Urine
AKA
Urine Specific Gravity
Specimen Type/Requirements
Collect a random urine specimen in a clean, dry screw-top container; or 8 mL conical yellow-top tube no preservatives; or 8 mL conical red/yellow jungle-top tube with chlorhexidine preservative (6 mL minimum).
Specimen Volume
| Preferred Volume | 8-12 mL urine |
| Minimum Volume | 0.5 mL urine |
Stability/Transport
| Room Temperature |
2 hours (unpreserved) 48 hours (preserved) |
Preferred for Transport >8 hours |
| Refrigerated |
8 hours (unpreserved) |
Preferred for Transport <8 hours |
| Frozen | N/A |
Performed Test Frequency
Monday through Sunday
Methodology
Refractometer (automated or manual)
Performing Lab
Sanford Laboratories Fargo- Core Lab
CPT
81003 for urine