TEST NAME

OCCULT BLOOD

See:        Gastroccult Body Fluid
                Hemoccult

TEST NAME

17‑OH KETOSTEROIDS

See:  17‑Ketogenic Steroids/17‑Ketosteroids*

TEST NAME

OLIGOCLONAL BANDING CSF

See:  MS Panel/Myelin Basic Protein*

TEST NAME

ONE TOUCH GLUCOSE

See: Whole Blood Glucose

TEST NAME

OPIATES

See:   Drug Abuse Random Urine  
         Drug Screen Body Fluid*
         Drug Screen Serum*


POWERCHART NAME

ORTHOPEDIC PANEL

MERCY TEST NAME

ORTHOPEDIC PANEL

MERCY LAB CODE

OPNL
Includes:

Albumin                           Alkaline Phosphatase        BUN              Gamma GT
BUN/Creatinine Ratio          Calcium                          Creatinine                     
Glucose                            Potassium                      Sodium
Specimen: 1.0 ml lithium heparin plasma from a PST tube. Refrigerate.
Performed: Within 8 hours of collection.  Available stat.
Reference values:   See individual test entry.
Method:  See individual test entry.
CPT Code:

82040  Albumin                     84075  Alk Phos            84520  BUN
82310  Calcium                      82565  Creat                82977  Gamma GT
82947  Glucose                     84132  Potassium          84295  Sodium

POWERCHART NAME

OSMOLALITY SERUM

MERCY TEST NAME

OSMOLALITY BLOOD

MERCY LAB CODE

OSM
Specimen:    0.5 ml plasma from PST or 0.5 mls serum from SST tube.  Refrigerate.
Comment:  Included in Osmolality Ratio or can be ordered separately.
Performed: Within 8 hours of receipt.  Available stat.
Reference value:  280 - 300 mosm/kg
Method:    Freezing point depression.
CPT Code: 83930

POWERCHART NAME

OSMOLALITY RATIO (SERUM-URINE)

MERCY TEST NAME

OSMOLALITY RATIO   

MERCY LAB CODE

OSMR
Includes: Osmolality serum                 Osmolality urine           Ratio
Specimen: 

0.5 ml plasma from PST or  0.5 ml serum from a SST tube and 1.0 ml random urine.  Collect random urine within one hour of blood collection. Aliquot serum specimen. Lab must notify nursing service when blood collected.  Refrigerate.
Performed:  Within 8 hours of receipt.  Available stat.
Reference value:

Serum: 280 - 300 mosm/kg
Urine: 300 - 1000 mosm/kg
Ratio: 1.0 - 3.0
Method: Freezing point depression.
CPT Code: 

83930 Osmolality
83935 Osmolality R UR

POWERCHART NAME

OSMOLALITY URINE

MERCY TEST NAME

OSMOLALITY R UR

MERCY LAB CODE

UOSM
Specimen: 1 ml random urine.  Refrigerate.
Comment: Included in Osmolality Ratio or can be ordered separately.
Performed: Within 8 hours of receipt.  Available stat.
Reference value: 300‑-1000 mosm/kg (varies with diet and fluid intake)
Method:  Freezing point depression
CPT Code:   83935

TEST NAME

OVA & PARASITES (STOOL)

See: Microbiology Section
In Pt Micro/ Regional Pt Micro

POWERCHART NAME

OXALATE 24 HOUR URINE

MERCY TEST NAME

OXALATE 24UR*

MERCY LAB CODE

VOXL
Patient preparation: Avoid taking large doses (greater than 2.0 g orally/ 24 hours) of Vitamin C during collection.
Specimen:

24 hour urine collection.   Collect in metal free container with no metal cap or glued insert. Refrigerate during collection.

Cause for rejection: Samples collected in or sent in containers with metal caps will not be tested.
Processing: 

Add 30 ml 6N HCL within 4 hour of completion of collection. Transfer 30 ml aliquot to metal-free container.  Adjust the pH to 1.5‑2 with 6N HCL. Indicate total 24‑hour volume.  Send refrigerated to Mayo.  Mayo # 8669.
Performed: 1 day.  Test set up Monday through Sunday.
Method: Enzymatic using Oxalate Oxidase.
CPT Code: 83945

TEST NAME

17 OXOSTEROIDS URINE

See:  Cortisol Free 24 Hour Urine