Section U

POWERCHART NAME	UREA BREATH TEST
MERCY TEST NAME	UREA BREATH TEST	MERCY LAB CODE	HPUBT

Patient Preparation and Processing:	Patient must be fasting >6 hours. Must be able to swallow whole capsule and blow up balloon. For further directions please refer to Patient Preparation and Speciment Collection Procedure located in the Special Helps Section. Bag of breath must be full send specimen ambient.
Performed:	Testing performed on Outpatients only. It is not available to inpatients due to the extensive preparation of discontinuing of medication.
Reference Value:	Negative.
Method:	Infared Spoctrophotometry (SP)
CPT Code:	83013

POWERCHART NAME	UREA NITROGEN 24 HOUR URINE
MERCY TEST NAME	UREA NITROGEN 24UR	MERCY LAB CODE	VUN

Specimen:	24-hour urine specimen. Refrigerate during collection, no preservative.
Comment:	Notify Dietary Department when collection begins.
Processing:	Aliquot 10 ml and indicate total 24-hour volume. Send refrigerated.
Performed:	Within 8 hours of receipt.
Reference value:	12 - 20 g/24 hours
Method:	Urease, UV
CPT Code:	84540

POWERCHART NAME	UREA CLEARANCE 24 HOUR URINE
MERCY TEST NAME	UREA CL 24 UR	MERCY LAB CODE	VUCL

Specimen:	1 ml serum from a SST tube plus 24-hour urine specimen. Refrigerate urine specimen during collection, no preservative.
Comment:	A single 24-hour urine collection may be used for Creatinine Clearance and Urea Nitrogen Clearance and Total Protein. Outpatients and Inpatients, Mercy Laboratory will order the appropriate serum BUN (BUNM) if a serum BUN has not been completed within 48 hours. This will be done at no additional charge. The patient needs to have blood drawn when the container is picked up or delivered. In order to avoid possible duplication, the serum BUN is not to be ordered by the physician office, the hospital floor or admitting. Regional Lab Clients send 0.5ml serum for the BUN at the same time that the urine specimen is sent. This enables analysis of both specimens by the same method for accuracy. Mercy Laboratory will order the serum BUN at no charge. Do not order a single BUN on the requisition.
Processing:	Aliquot 20 ml urine and indicate total 24 hour volume. Send refrigerated.
Performed:	Within 8 hours of receipt.
Reference value:	None available.
Method:	Urease, UV
CPT Code:	84545

POWERCHART NAME	URIC ACID
MERCY TEST NAME	URIC ACID	MERCY LAB CODE	URIC

Specimen:	0.5 ml lithium heparin plasma from a PST tube. Sodium Heparin and EDTA plasma tubes are also acceptable. Stable 48 hours refrigerated.
Performed:	Within 8 hours of receipt. Available stat.
Reference value:	Male: 3.5 - 8.5 mg/dl Female: 2.5 - 7.5 mg/dl
Method:	Uricase Colorimetric
CPT Code:	84550

POWERCHART NAME	URIC ACID 24 HOUR URINE
MERCY TEST NAME	URIC ACID 24UR	MERCY LAB CODE	VURI

Patient Instructions:	Do not drink alcoholic beverages during your 24-hour collection.
Specimen:	24hour urine specimen. Refrigerate during collection, no preservative.
Comment:	A single 24-hour urine collection may be used for Calcuim, Magnesium, Phosphorus and Uric Acid.
Processing:	Aliquot 10 ml and indicate total 24-hour volume. Send refrigerated. Special processing will be done at Mercy Laboratory.
Performed:	Within 8 hours of receipt.
Reference value:	250‑ - 750 mg/24 hours
Method:	Uricase Colorimetric
CPT Code:	84560

POWERCHART NAME	URIC ACID BODY FLUID
MERCY TEST NAME	URIC ACID BF	MERCY LAB CODE	FURI

Specimen:	1.0 ml joint fluid in a plain red top tube. Refrigerate.
Cause for rejection:	Moderate/gross hemolysis.
Performed:	Within 8 hours of receipt.
Reference value:	Negative
Method:	Uricase Colorimetric
CPT Code:	84560

TEST NAME

URIC ACID CRYSTALS

See: Body Fluid Crystals

TEST NAME

URINE CENTRIFUGED MICRO

See: Urine Micro Only

POWERCHART NAME	UA URINALYSIS ROUTINE
MERCY TEST NAME	URINALYSIS ROUTINE	MERCY LAB CODE	UA

Includes:

Appearance	Bilirubin	Clinitest on all patients less than 3 years old
Glucose	Ketones	Leukocytes	Nitrites
Occult Blood	Ph	Protein	Specific Gravity
Urobilinogen

A description of the centrifuged sediment will be included on hazy and cloudy specimens and those specimens having one or more positive results on the dipstick except Ketone. Clear urines with negative dipsticks will not have the centrifuged microscopic exam performed.

Specimen:

15 ml random urine specimen (2 ml minimum). Deliver to the Lab within 1 hour of collection.
All routine urinalysis are to be tested on the first morning specimen.

Nursing Home and Reference Lab specimens: Deliver to Lab within 8 hours of collection. Keep refrigerated.

Comment:

Indicate time of collection in comment. Indicate method of collection using the following codes:
MURN Midstream
CURN Cath
SURN Suprapubic
A microscopic is performed and charged if any of the following exist:
Clarity is hazy, cloudy, or turbid.
All positive chemstrip results except for positive glucose or positive ketones.
Providers may specifically request a microscopic be performed by writing “urinalysis with micro” on the requisition.

Performed:

Within 2 hours of receipt. Available stat.
2300 cutoff except for stats, Labor and Delivery, routine orders with C&S, new admits and pre-ops.

Reference value:

Spec gravity: 1.001 - 1.035
Ph: 4.6 - 8.0
Protein: Negative
Glucose: Negative
Ketones: Negative

Urine Microscopic:
WBC: 0 - 5/HPF
RBC: O - Z/HPF
SQ Epithelial: 0 - 5/HPF
CAST: rare Hyaline/LPF
Crystals: none seen/HPF
Bacteria: none seen/HPF
Yeast: none seen/HPF

Bilirubin: Negative
Occult blood: Negative
Urobilinogen: Negative
Leukocytes: Negative
Nitrites: Negative

Method:

Reagent strip, microscopic examination.

CPT Code:

81003 Urinalysis Routine (if microscopic not done)
81001 Urine Routine and Micro (when microscopic is done)

TEST NAME

URINE CULTURE

See: Microbiology Section

In Pt Micro / Regional Pt Micro

TEST NAME

URINE CYTOLOGY

See: Cytology Section Urine

POWERCHART NAME	URINE DIPSTICK
MERCY TEST NAME	URINE DIPSTICK	MERCY LAB CODE	UCS

Includes:

Appearance	Bilirubin	Clinitest on all patients less than 3 years old
Glucose	Ketones	Leukocytes	Nitrites
Occult Blood	Ph	Proteinp	Specific Gravity
Urobilinogen

Specimen:

Random urine specimen delivered to the Lab within 1 hour of collection. All routine urinalysis are to be tested on the first morning specimen.

Ordering:

Indicate time of collection in comment.

Performed:

Within 2 hours of receipt. Available stat. 2300 cutoff except for stats, Labor and Delivery, routine orders with C&S, new admits and preops.

Reference value:

Spec gravity: 1.001 - ‑1.035
pH : 4.6 - 8.0
Protein: Negative
Glucose: Negative
Ketones: Negative

Bilirubin: Negative
Occult blood: Negative
Urobilinogen: Negative
Leukocytes: Negative
Nitrites: Negative

Method:

Reagent strip.

CPT Code:

81003

TEST NAME

URINE ELECTROPHORESIS

See: Protein Electrophoresis 24 Hour Urine*

TEST NAME

URINE EOSINOPHIL

See: Eosinophil, Urine

POWERCHART NAME	URINE MEASUREMENT
MERCY TEST NAME	URINE MEASUREMENT	MERCY LAB CODE	VMSM

Comment:	To be ordered by the Lab on any urine specimen measured by Mercy Lab personnel.
Method:	Manually using a graduated cylinder or container.
CPT Code:	81050

POWERCHART NAME	URINE MICROSCOPIC ONLY
MERCY TEST NAME	URINE MICRO ONLY	MERCY LAB CODE	UCM

Includes:	Description of the centrifuged sediment.
Specimen:	Random urine specimen delivered to Lab within 1 hour of collection. All routine urinalysis are to be tested on the first morning specimen.
Comment:	Indicate time of collection in comment.
Performed:	Within 2 hours of receipt. Available stat. 2300 cutoff except for stats, Labor and Delivery, routine orders with C&S, new admits and preops.
Reference Value:	Urine Microscopic: WBC: 0-5/HPF RBC: O-Z/HPF SQ Epithelial: 0-5/HPF CAST: rare Hyaline/LPF Crystals: none seen/HPF Bacteria: none seen/HPF Yeast: none seen/HPF
Method:	Microscopic examination
CPT Code:	81015

TEST NAME

URINE PH

See: pH Urine

TEST NAME

URINE PROTEIN DIPSTICK

See: Urine Dipstick

TEST NAME

URINE SPECIMEN 24-HOUR

Comment:

Collection containers are available from the Laboratory. If preservative is needed, contact the Lab and indicate test name so that proper preservative will be added to the container. See 24‑hour Urine Collection Requirements in Special Helps section of Lab Test Index for preservative that may be required. Orders are to be placed at the completion of the specimen collection period.Refer to the introduction of the Lab Test Index for collection instructions.This is a list of the more commonly ordered 24‑hour urine tests done at Mercy.

Please refer to the specific test in this test index for ordering instructions and any other information necessary to the collection:

Amylase 24-hour urine
Calcium 24-hour urine
Creatinine 24-hour urine
Creatinine Clearance 24-hour urine
Electrolytes 24-hour urine
Glucose 24-hour urine

Mono Clonal Protein 24-hour urine
Phosphorus 24-hour urine
Protein 24-hour urine
Sodium 24-hour urine
Sodium and Potasium 24-hour urine
Urea Nitrogen 24-hour urine
Uric Acid 24-hour urine

Other 24-hour urine tests are available. Consult this test index under appropriate test name for information. If test is not listed in this test index, consult with the Lab for collection and ordering information.

Regional Lab Clients: If a preservative is needed that you cannot provide, contact Mercy Laboratory with the name of the test ordered. The collection container with perservative will be sent via courier.

TEST NAME

UROPORPHYRINS

See: Porphyrin Quantitative 24Hour Urine*
Porphyrins Quantitative Random Urine