Clinical Chemistry & Immunoassay

General Labs | Clinical Chemistry & Immunoassay

Many different tests exist to detect and measure almost any type of chemical component in blood or urine. Components may include blood glucose, electrolytes, enzymes, hormones, lipids (fats), other metabolic substances, and proteins. Immunoassays are used to test for the presence of a specific antibody or a specific antigen in blood or other fluids.

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Search for panels using CPT code or keyword. Scroll table horizontally to view all panel data.

CPT CODE	Panel/Test	Patient Preparation	Collection Info	Specimen Type	Unacceptable Conditions	Volume – Preferred	Volume – Minimum	Storage	Stability	Methodology	Critical/Panic Value	Reference Values:	Comments:
82040	Albumin	None	SST – Gold PST – Lt Green	Serum	None	1 mL	0.2 mL	Refrigerated: 2-8°C	Ambient: 10 week Refrigerated: 5 month Frozen: 3 month	Colorimetric	N/A	3.4 – 5.0 g/dL	(none)
84460	Alanine Aminotransferase (ALT)	None	SST – Gold PST – Lt Green	Serum	Anticoagulant other than heparin	1 mL	0.2 mL	Refrigerated: 2-8°C	Ambient: 3 days Refrigerated: 1 week Frozen: 2 week	Enzymatic	N/A	10-49 U/L	(none)
84075	Alkaline Phosphatase	None	SST – Gold PST – Lt Green	Serum	Anticoagulant other than heparin	2 mL	0.2 mL	Refrigerated: 2-8°C	Ambient: 1 week Refrigerated: 1 week Frozen: 2 month	Enzymatic	N/A	46-116 U/L	(none)
82141	Ammonia	None	PST – Lt Green (sodium or lithium heparin) Collect on ice.	Plasma	Serum or blood, non-frozen. Specimens containing other anticogulants.	2 mL	0.25 mL	Separate from cells and freeze within 15 min.	Ambient: Unacceptable Refrigerated: 2 hrs Frozen: 3 wks	Enzymatic	N/A	< 72 µmol/L	(none)
82150	Amylase	None	SST – Gold PST – Lt Green	Serum	Specimens containing calcium chelating anticoagulants such as oxalates, citrates, or EDTA.	1 mL	0.3 mL	Refrigerated: 2-8°C	Ambient: 4 hours Refrigerated: 1 wk Frozen: 1 month	Enzymatic	N/A	28 – 100 IU/L	(none)
84450	Aspartate Aminotransferase (AST)	None	SST – Gold PST – Lt Green	Serum	None	3 mL	0.2 mL	Refrigerated: 2-8°C	Ambient: 3 days Refrigerated: 1 week Frozen: 2 week		N/A	<34 U/L	(none)
84520	BUN, Urea Nitrogen	None	SST – Gold PST – Lt Green	Serum	Specimens containing sodium fluoride	1 mL	0.2 mL	Refrigerated: 2-8°C	Ambient: 1 week Refrigerated: 1 week Frozen: 1 year	Colorimetric	>90 mg/dL	9 – 23 mg/dL	(none)
86140	C-Reactive Protein, CRP	None	SST – Gold PST – Lt Green	Serum	Hemolyzed specimens	1 mL	0.2 mL	Refrigerated: 2-8°C	Ambient: 14 days Refrigerated: 3 weeks Frozen: 1 year	Colorimetric	N/A	<1 mg/dL	(none)
82310	Calcium	None	SST – Gold PST – Lt Green	Serum	Specimens containing calcium chelating anticoagulants such as oxalates, citrates, or EDTA.	1 mL	0.2 mL	Refrigerated: 2-8°C	Ambient: 1 week Refrigerated: 3 week Frozen: 8 months	Colorimetric	Low: 13 mg/dL	8.7 – 10.4 mg/dL	Do not use powdered gloves during collection
82435	Chloride, Cl	None	SST – Gold PST – Lt Green	Serum	Anticoagulants other than heparin. Hemolyzed specimens	1 mL	0.2 mL	Refrigerated: 2-8°C	Ambient: 1 week Refrigerated: 1 week Frozen: 6 months	Dilute Ion-Selectric Electrode	Low: 115 mEq/L	98 – 107 nEq/L	(none)
82465	Cholesterol, Total	None	SST – Gold PST – Lt Green	Serum	Body fluids	1 mL	0.2 mL	Refrigerated: 2-8°C	Ambient: 1 week Refrigerated: 1 week Frozen: 3 months	Colorimetric	Borderline high: 200-239 High: >239 mg/dL	< 200 mg/dL	Borderline-high chol: 200 – 239 mg/dL
82565	Creatinine	None	SST – Gold PST – Lt Green	Serum	Do not drawn from catheters. Anticoagulants other than heparin.	1 mL	0.2 mL	Refrigerated: 2-8°C	Ambient: 1 week Refrigerated: 1 week Frozen: 3 months	Enzymatic	Male: 0.5 – 1.1 mg/dL Female: 0.7 – 1.3 mg/dL	> 4.0 mg/dL	(none)
83721	Direct LDL Cholesterol, dLDL	None	SST – Gold PST – Lt Green	Serum	None	1 mL	0.5 mL	Refrigerated: 2-8°C	Ambient: 8 hour Refrigerated: 1 week Frozen: 12 months	Colorimetric	Borderline risk: 130-159 mg/dL High risk: > 160 mg/dL	< 129 mg/dL	This test is done when a lipid panel with reflex LDL is ordered. When Triglycerides are greater than 400 mg/dL the calculation for LDL is not valid and a driect measure LDL is recommended.
82728	Ferritin	None	SST – Gold PST – Lt Green	Serum	Grossly hemolyzed specimens	1 mL	0.5 mL	Frozen: -18 to -25°C	Ambient: 48 hour Refrigerated: 1 week Frozen: 12 months	Immunoassay	N/A	30 – 409 mg/mL	(none)
82746	Folic Acid, Folate	None	SST – Gold PST – Lt Green	Serum	Hemolyzed specimens EDTA plasma.	1 mL	0.5 mL	Refrigerated: 2-8°C	Ambient: 2 hour Refrigerated: 8 hours Frozen: 6 months	Immunoassay	Deficient: < 3.9 ng/mL Indeterm: 4.0-5.8 ng/mL	> 5.9 ng/mL	Protect sample for light
82977	Gamma GT, GGT	None	SST – Gold PST – Lt Green	Serum	Grossly hemolyzed specimens	1 mL	0.2 mL	Refrigerated: 2-8°C	Ambient: 1 week Refrigerated: 1 week Frozen: 2 months	Immunoassay	N/A	7-48 U/L	May be useful as an indirect marker of alcohol abuse, nonalcoholic farry liver disease, drug intoxication, or other liver diseases.
82947	Glucose, Serum	None	SST – Gold PST – Lt Green NaFl/KOx – Gray	Serum	None	1 mL	0.2 mL	Refrigerated: 2-8°C	Ambient: 24 hour Refrigerated: 1 week Frozen: 12 months	Colorimetric/ Enzymatic/ Turbidimetric	Low: 450 mg/dL	74 – 106 mg/dL	Used to Diagnose and manage diabetes mellitus and other carohydrate metabolism disorders.
83718	Direct HDL Cholesterol, HDL Cholesterol	None	SST – Gold PST – Lt Green	Serum	None	1 mL	0.5 mL	Refrigerated: 2-8°C	Ambient: 24 hour Refrigerated: 1 week Frozen: 1 month	Colorimetric/ Enzymatic/ Turbidimetric	N/A	> 60 mg/dL	An HDL cholesterol less than 40 mg/dL is low nad constitutes a coronary heart disease risk factor. An HDL cholesterol greater than 60 mg/dL is a negative risk factor for coronary heart disease.
83036	Hemoglobin A1c, w/eAverage Glucose	None	EDTA – Lavender K2EDTA – Pink	Whole Blood	Tissue or urine	1 mL	0.5 mL	Refrigerated: 2-8°C	Ambient: 72 hour Refrigerated: 1 week Frozen: 3 month	HPLC	N/A	< 5.7 %	HbA1c values of 5.7-6.4 percent indicate an increaed risk for developing diabetes mellitus. HbA1c values greater than of equal to 6.5 percent are diagnostic of diabetes mellitur. For diagnosis of diabetes in individuals without unequivocal hyperglycemia, results should be confirmed by repeat testing.
83036	Hemoglobin A1c, Glycohemoglobin, A1c	None	EDTA – Lavender K2EDTA – Pink	Whole Blood	Tissue or urine	1 mL	0.5 mL	Refrigerated: 2-8°C	Ambient: 72 hour Refrigerated: 1 week Frozen: 3 month	HPLC	N/A	<5.7 %	HbA1c values of 5.7-6.4 percent indicate an increaed risk for developing diabetes mellitus. HbA1c values greater than of equal to 6.5 percent are diagnostic of diabetes mellitur. For diagnosis of diabetes in individuals without unequivocal hyperglycemia, results should be confirmed by repeat testing.
86141	High Sensitivity CRP, hsCRP	None	SST – Gold PST – Lt Green	Serum	Hemolyzed specimen	1 mL	0.3 mL	Refrigerated: 2-8°C	Ambient: 11 days Refrigerated: 2 month Frozen: 12 month	Colorimetric/ Enzymatic/ Turbidimetric	N/A	< 3.0 mg/L	Not recommended for general cardiovascular disease risk assessment in asymptomatic adults. May aid in AVD risk stratification in specific populations.
83090	Homocysteine	None	PST – Lt Green EDTA (K2 or K3) – Lavender	Plasma	Sodium Citrate anticoagulant – Lt Blue	1 mL	0.5 mL	Refrigerated: 2-8°C	Ambient: 4 days Refrigerated: 1 month Frozen: 10 month	Colorimetric/ Enzymatic/ Turbidimetric	N/A	0 – 15 µmol/L	Not recommended for risk assessment of cardiovascular disease or venous thromboembolism.
83540	Iron	None	SST – Gold PST – Lt Green	Serum	Grossly hemolyzed samples. Anticoagulants other than heparin.	1 mL	0.2 mL	Refrigerated: 2-8°C	Ambient: 1 week Refrigerated: 3 week Frozen: 3 months	Colorimetric/ Enzymatic/ Turbidimetric	N/A	50-175 ug/mL	Aid in the diagnosis of iron deficiency anemia and iron overload.
83690	Lipase	None	SST – Gold PST – Lt Green	Serum	Body fluids. Any anticoagulant other than heparin.	1 mL	0.2 mL	Refrigerated: 2-8°C	Ambient: 1 week Refrigerated: 1 week Frozen: 2 months	Colorimetric/ Enzymatic/ Turbidimetric	N/A	12-53 U/L	(none)
83735	Magnesium	None	SST – Gold PST – Lt Green	Serum	Hemolyzed samples. Anticoagulant other than heparin.	1 mL	0.5 mL	Refrigerated: 2-8°C	Ambient: 1 week Refrigerated: 1 week Frozen: 12 months	Colorimetric/ Enzymatic/ Turbidimetric	Low: 4.9 mg/dL	1.6 – 2.6 mg/dL	(none)
82043	MicroAlbumin	None	Random Urine Collection	Urine	Contaminants of urine	10 mL	1.0 mL	Refrigerated: 2-8°C	Ambient: 2 hour Refrigerated: 1 week Frozen: 3 months	Immunoturbidi-metric	N/A	<30 mg/dL	Used to detect early kidney disease in those with diabetes or other risk factors like hypertension.
83970	ParaThyroid Hormone, Intact (PTH)	None	SST – Gold EDTA – Lavender K2EDTA – Pink	Serum	Hemolyzed samples. Grossly lipemic samples. Body fluid, urine, RST tubes.	1 mL	0.5 mL	Frozen: -18 to -25°C	Ambient: 8 hour Refrigerated: 48 hour Frozen: 6 months	Immunoassay	N/A	10-65 pg/mL	PTH is unstable in unseparated serum. If collection serum instead of plasma, tubes should be centrifuged immediately after clotting.
84132	Potassium	None	SST – Gold PST – Lt Green	Serum	Anticoagulants other than heparin. Hemolyzed specimens	1 mL	0.2 mL	Refrigerated: 2-8°C	Ambient: 1 week Refrigerated: 1 week Frozen: 6 months	Dilute Ion-Selectric Electrode	Low: 6.5 mEq/L	3.5 – 5.1 mEq/L	(none)
84134	Prealbumin	Fasting preferred	SST – Gold	Serum	Hemolyzed specimens	1 mL	0.5 mL	Refrigerated: 2-8°C	Ambient: 3 days Refrigerated: 6 month Frozen: 12 months	Colorimetric/ Enzymatic/ Turbidimetric	N/A	20.0 – 40.0 mg/dL	(none)
84153	PSA, Screen	None	SST – Gold PST – Lt Green EDTA – Lavender K2EDTA – Pink	Serum	Grossly hemolyzed specimens.	1 mL	0.5 mL	Refrigerated: 2-8°C	Ambient: 24 hour Refrigerated: 5 days Frozen: 6 months	Immunoassay	N/A	0.0 – 4.0 ng/mL	Preferred initial screening test for prostate cancer in conjunction with digital rectal exam.
84153	PSA, Diagnostic	None	SST – Gold PST – Lt Green EDTA – Lavender K2EDTA – Pink	Serum	Grossly hemolyzed specimens.	1 mL	0.5 mL	Refrigerated: 2-8°C	Ambient: 24 hour Refrigerated: 5 days Frozen: 6 months	Immunoassay	N/A	0.0 – 4.0 mg/mL	Use to monitor patients for recurrence of cancer.
86430	Rheumatoid Factor, RF	Fasting preferred	SST – Gold PST – Lt Green EDTA – Lavender K2EDTA – Pink	Serum	Hemoloyzed specimens	1 mL	0.2 mL	Refrigerated: 2-8°C	Ambient: 24 hour Refrigerated: 8 days Frozen: 3 months	Immunoturbidi-metric	N/A	0 – 14 IU/mL	Aids in the workup of rheumatoid arthritis or undifferentiated inflammatory arthritides.
84295	Sodium, Na	None	SST – Gold PST – Lt Green	Serum	Anticoagulants other than heparin. Hemolyzed specimens	1 mL	0.2 mL	Refrigerated: 2-8°C	Ambient: 1 week Refrigerated: 1 week Frozen: 6 months	Dilute Ion-Selectric Electrode	Low: 160 mEq/L	132 – 146 mEq/L	(none)
84439	Thyroxine, T4 Free	None	SST – Gold PST – Lt Green EDTA – Lavender K2EDTA – Pink	Serum	Grossly hemolyzed specimens.	1 mL	0.5 mL	Refrigerated: 2-8°C	Ambient: 5 days Refrigerated: 1 week Frozen: 1 month	Immunoassay	N/A	0.9 – 1.7 mg/dL	Not the preferred initial thyroid disorder screening test. Order following an abnormal thyroid stimulating hormone (TSH) results to diagnosis throid disease. Order in conjunction with TSH in cases of suspected secondary hypothyroidism.
84443	Thyroid Stimulating Hormone, (TSH)	None	SST – Gold PST – Lt Green EDTA – Lavender K2EDTA – Pink	Serum	Grossly hemolyzed specimens.	1 mL	0.5 mL	Refrigerated: 2-8°C	Ambient: 8 days Refrigerated: 2 week Frozen: 24 month	Immunoassay	N/A	0.5 -5 uIU/mL	Preferred test for screening and monitoring of thyroid function.
84443	TSH, reflex T4, Free	None	SST – Gold PST – Lt Green EDTA – Lavender K2EDTA – Pink	Serum	Grossly hemolyzed specimens.	1 mL	0.5 mL	Refrigerated: 2-8°C	Ambient: 8 days Refrigerated: 2 week Frozen: 24 month	Immunoassay	N/A	TSH : 0.5 – 5uIU/mL Free T4: 0.8-1.8 mng/dL	Assess thyroid unction. Identify risk in patient with palpable thyroid nodules. Includes reflex to free thyroxind for thyroid stimulating hormone results outside the reference range.
84403	Testosterone, total male	None	SST – Gold PST – Lt Green EDTA – Lavender K2EDTA – Pink	Serum	None	1 mL	0.5 mL	Refrigerated: 2-8°C	Ambient: 5 days Refrigerated: 2 week Frozen: 6 month	Immunoassay	N/A	300 – 720 ng/mL	(none)
84466	Transferrin	Fasting preferred	SST – Gold PST – Lt Green	Serum	Hemolyzed specimens. EDTA anticoagulant.	1 mL	0.5 mL	Refrigerated: 2-8°C	Ambient: 8 days Refrigerated: 8 days Frozen: 6 month	Colorimetric/ Enzymatic/ Turbidimetric	N/A	200 – 360 mg/dL	Aid in the diagnosis of iron deficient anemia and iron overload.
84550	Uric Acid	None	SST – Gold PST – Lt Green	Serum	Body fluid and Urine	1 mL	0.2 mL	Refrigerated: 2-8°C	Ambient: 3 days Refrigerated: 1 week Frozen: 6 month	Colorimetric/ Enzymatic/ Turbidimetric	N/A	3.1-9.2 mg/dL	Aid in the diagnosis and monitoring of gout or kidney stones. Aids in monitoring uric acid levels in patients at risk for kidney stone development.
82607	Vitamin B12	None	SST – Gold PST – Lt Green	Serum	EDTA plasma. Hemolyzed specimens.	1 mL	0.5 mL	Frozen: -18 to -25°C	Ambient: 8 hours Refrigerated: 24 hours Frozen: 3 month	Immunoassay	N/A	180 – 914 pg/mL	Protect sample from light. Store in amber transport tube.
82306	Vitamin D, 25 OH Vitamin D	None	SST – Gold	Serum	EDTA plasma. Grossly hemolyzed specimens.	1 mL	0.3 mL	Refrigerated: 2-8°C	Ambient: 72 hours Refrigerated: 1 week Frozen: 6 month	Immunoassay	Deficiency: 150 mg/mL	30 – 80 ng/mL	Preferred test to diagnose vitamin D insufficiency and monitor response to therapy. Testing is recommended only for patients at risk for vitamin D insufficiency.

SST = Serum Separator Tube
PST = Plasma Seperator Tube

Clinical Chemistry & Immunoassay

General Diagnostics

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