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SPECIFIC GRAVITY, URINE

Mnemonic

U SG

Synonym

Urine Specific Gravity, U SG

Specimen Collection Requirements

Patient Preparation

Males: Discard the first 25.0 mL of urine then collect without stopping the stream. Females: Spread labia while urinating.

Collect

Urine, sterile wide-mouthed container. The first morning urine is the preferred specimen, however any fresh random urine is acceptable.

Supply Item Number - 135327

Handling

Deliver to the lab ASAP or refrigerate immediately if specimen will not arrive to laboratory within 1 hour.

Preferred Volume

15.0 mL

Minimum Volume

12.0 mL

Transport

Refrigerated

Rejection Criteria

Frozen specimen, specimen collected with preservatives, urine collected in a diaper or other absorbent material, and non-sterile containers.

Stability

Ambient: 2 hours; Refrigerated: 12 hours

Testing Information

Performed

7 days/week

Reported

24 hours

Method

Dipstick

Reference Values

Reference Values

<1.030

CPT Codes

81003

Last Updated: Thursday, March 14, 2019 12:51:08 PM


Client Services: 503-413-1234