TEST NAME/ PSYCHE CODE COLLECTION GUIDELINES REFERENCE VALUES ROOM TEMP. REFRIGERATED FROZEN Clinical Utility GENTAMICIN, SERUM TROUGH: 0-2.0 mg/dL ------ 48 hours ------ Tests level of gentamicin circulating through the body. Certain therapeutic levels elicit require anti-microbial 2 ml SERUM. REFRIGERATE. CODE: GE PEAK: 5-10 mg/dL response. CPT: 81070 SCHEDULE: DAILY GGT (GAMMA GLUTAMYL TRANSFERASE) 5-31 IU/L ------ 48 hours ------ The gamma-glutamyl transferase (GGT) test may be used to determine the cause of elevated alkaline 1ml SERUM CODE: GGT AGE AND GENDER DEPENDENT phosphatase (ALP). CPT:82977 SCHEDULE: DAILY GLUCOSE, CSF Immediately 2 hours ------ CFS normally has no glucose. Presence of glucose indicates spinal meningitis or seizure disorders. 1 ml SPINAL FLUID 40-80 mg/mL CODE: GLFL CPT: 82947 SCHEDULE: DAILY GLUCOSE, MISCELLANEOUS FLUID Immediately 2 hours ------ Body fluids normally have no glucose. Presence of glucose indicates infection or inflammation. 1 ml BODY FLUID NO NORMAL RANGE ESTABLISHED CODE: GLFL CPT: 82945 SCHEDULE: DAILY GLUCOSE, PREGNANT RELATED 1 HOUR Results indicate glucose metabolism response to the glucola load. 1 ml SERUM COLLECTED ONE HOUR ------ 48 hours ------ LOADING (O'SULLIVAN SCREEN) 70-139 mg/dL AFTER 50 gm GLUCOSE LOAD CODE: GESC CPT: 82947 SCHEDULE: DAILY The blood glucose test may be used to: GLUCOSE, SERUM (FASTING AND RANDOM) 60-115 mg/dL ------ 48 hours ------ 1 ml SERUM Screen for both high blood glucose AGE AND GENDER DEPENDENT CODE: GLU Help diagnose diabetes CPT: 82947 SCHEDULE: DAILY Monitor glucose levels in persons with diabetes GLUCOSE TOLERANCE TEST 8HR FAST REQUIRED. COLLECT AND CRITERIA FOR DIAGNOSIS OF ------ 48 hours ------ The glucose tolerance test monitors glucose metabolism over a certain time period. Used in diabetes CODE: GTT3 (3 HOUR) LABEL FASTING SPECIMEN. GIVE GESTATIONAL DIABETES: 2 OR MORE diagnosis and management. CODE: GTT5 (5 HOUR) PATIENT 100gm GLUCOSE VALUES MUST EXCEED: CPT: 82951, 82952 PREPARATIONSCHEDULE: DAILY TO BE CONSUMED IN 5 FASTING: 60-115 mg/dL GRAM STAIN DONE AS ORDERED OR AS NEEDED FOR ------ 48 hours ------ A Gram stain of the specimen or swab from an infected site is the most commonly performed microbiology INTERPRETIVE REPORT CODE: GRST IDENTIFICATION test used if bacteria is present. CPT: 87205 SCHEDULE: DAILY GROUP A STREP, RAPID ANTIGEN DETECTION A rapid strep test is used to determine whether a person with a sore throat (pharyngitis) has a group A 2 CULTURETTES REQUIRED. BY ------ 48 hours ------ (EIA) REQUEST, CUTURE PERFORMED IF NEGATIVE streptococcal infection. CODE: ASTR RAPID ANTIGEN IS NEGATIVE. CPT: 87081 SCHEDULE: DAILY.