Test Catalog

Test Id : RFAMA

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Renal Function Panel, Serum

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Overview

Test Catalog

Useful For
Suggests clinical disorders or settings where the test may be helpful

Aiding in diagnosis and management of conditions affecting kidney function

 

General health screening

 

Screening patients at risk of developing kidney disease

 

Management of patients with known kidney disease

Profile Information
A profile is a group of laboratory tests that are ordered and performed together under a single Mayo Test ID. Profile information lists the test performed, inclusive of the test fee, when a profile is ordered and includes reporting names and individual availability.

Test Id Reporting Name Available Separately Always Performed
KS Potassium, S Yes Yes
NAS Sodium, S Yes Yes
CL Chloride, S Yes Yes
HCO3 Bicarbonate, S Yes Yes
AGAP Anion Gap No Yes
BUN Bld Urea Nitrog (BUN), S Yes Yes
CRTS1 Creatinine with eGFR, S Yes Yes
CA Calcium, Total, S Yes Yes
GLURA Glucose, Random, S Yes Yes
ALB Albumin, S Yes Yes
PHOS Phosphorus (Inorganic), S Yes Yes

Method Name
A short description of the method used to perform the test

KS, NAS, CL: Potentiometric, Indirect Ion-Selective Electrode

HCO3: Photometric, Enzymatic

AGAP: Calculated result

BUN: Photometric, Urease

CRTS1: Enzymatic Colorimetric Assay

CA: Photometric

GLURA: Photometric/Hexokinase

ALB: Photometric, Bromcresol Green

PHOS: Photometric, Ammonium Molybdate

NY State Available
Indicates the status of NY State approval and if the test is orderable for NY State clients.

Yes

Reporting Name
Lists a shorter or abbreviated version of the Published Name for a test

Renal Function Panel, S

Aliases
Lists additional common names for a test, as an aid in searching

Renal function panel

Specimen Type
Describes the specimen type validated for testing

Serum

Necessary Information

Patient's age and sex are required.

Specimen Required
Defines the optimal specimen required to perform the test and the preferred volume to complete testing

Collection Container/Tube:

Preferred: Serum gel

Acceptable: Red top

Submission Container/Tube: Plastic vial

Specimen Volume: 0.6 mL

Collection Instructions:

1. Serum gel tubes should be centrifuged within 2 hours of collection.

2. Red-top tubes should be centrifuged and the serum aliquoted into a plastic vial within 2 hours of collection.

Forms

If not ordering electronically, complete, print, and send a Renal Diagnostics Test Request (T830) with the specimen.

Specimen Minimum Volume
Defines the amount of sample necessary to provide a clinically relevant result as determined by the Testing Laboratory

0.5 mL

Reject Due To
Identifies specimen types and conditions that may cause the specimen to be rejected

Gross hemolysis Reject
Gross lipemia OK

Specimen Stability Information
Provides a description of the temperatures required to transport a specimen to the performing laboratory, alternate acceptable temperatures are also included

Specimen Type Temperature Time Special Container
Serum Refrigerated 24 hours

Useful For
Suggests clinical disorders or settings where the test may be helpful

Aiding in diagnosis and management of conditions affecting kidney function

 

General health screening

 

Screening patients at risk of developing kidney disease

 

Management of patients with known kidney disease

Clinical Information
Discusses physiology, pathophysiology, and general clinical aspects, as they relate to a laboratory test

This panel could be ordered when a patient has risk factors for kidney dysfunction such as high blood pressure (hypertension), diabetes, cardiovascular disease, obesity, elevated cholesterol, or a family history of kidney disease. This panel may also be ordered when someone has signs and symptoms of kidney disease, though early kidney disease often does not cause any noticeable symptoms. It may be initially detected through routine blood or urine testing.

Reference Values
Describes reference intervals and additional information for interpretation of test results. May include intervals based on age and sex when appropriate. Intervals are Mayo-derived, unless otherwise designated. If an interpretive report is provided, the reference value field will state this.

SODIUM

<1 year: Not established

> or =1 year: 135-145 mmol/L

 

POTASSIUM

<1 year: Not established

> or =1 year: 3.6-5.2 mmol/L

 

CHLORIDE

<1 year: Not established

1-17 years: 102-112 mmol/L

> or =18 years: 98-107 mmol/L

 

BICARBONATE

Males

<1 year: Not established

1-2 years: 17-25 mmol/L

3 years: 18-26 mmol/L

4-5 years: 19-27 mmol/L

6-7 years: 20-28 mmol/L

8-17 years: 21-29 mmol/L

> or =18 years: 22-29 mmol/L

 

Females

<1 year: Not established

1-3 years: 18-25 mmol/L

4-5 years: 19-26 mmol/L

6-7 years: 20-27 mmol/L

8-9 years: 21-28 mmol/L

> or =10 years: 22-29 mmol/L

 

ANION GAP

<7 years: Not established

> or =7 years: 7-15

 

BLOOD UREA NITROGEN (BUN)

Males

<12 months: Not established

1-17 years: 7-20 mg/dL

> or =18 years: 8-24 mg/dL

 

Females

<12 months: Not established

1-17 years: 7-20 mg/dL

> or =18 years: 6-21 mg/dL

 

CREATININE

Males

0-11 months: 0.17-0.42 mg/dL

1-5 years: 0.19-0.49 mg/dL

6-10 years: 0.26-0.61 mg/dL

11-14 years: 0.35-0.86 mg/dL

> or =15 years: 0.74-1.35 mg/dL

 

Females

0-11 months: 0.17-0.42 mg/dL

1-5 years: 0.19-0.49 mg/dL

6-10 years: 0.26-0.61 mg/dL

11-15 years: 0.35-0.86 mg/dL

> or =16 years: 0.59-1.04 mg/dL

 

ESTIMATED GLOMERULAR FILTRATION RATE (eGFR)

 

>= 18 years old: > or =60 mL/min/BSA (body surface area)

Estimated GFR calculated using the 2021 CKD-EPI creatinine equation.

Note: eGFR results will not be calculated for patients younger than 18 years old.

 

CALCIUM

<1 year: 8.7-11.0 mg/dL

1-17 years: 9.3-10.6 mg/dL

18-59 years: 8.6-10.0 mg/dL

60-90 years: 8.8-10.2 mg/dL

>90 years: 8.2-9.6 mg/dL

 

GLUCOSE

0-11 months: Not established

> or =1 year: 70-140 mg/dL

 

Total Protein

> or =1 year: 6.3-7.9 g/dL

Reference values have not been established for patients who are younger than 12 months of age.

 

ALBUMIN

> or =12 months: 3.5-5.0 g/dL

Reference values have not been established for patients who are younger than 12 months of age.

 

PHOSPHORUS

Males

1-4 years: 4.3-5.4 mg/dL

5-13 years: 3.7-5.4 mg/dL

14-15 years: 3.5-5.3 mg/dL

16-17 years: 3.1-4.7 mg/dL

> or =18 years: 2.5-4.5 mg/dL

Reference values have not been established for patients that are younger than 12 months of age.

 

Females

1-7 years: 4.3-5.4 mg/dL

8-13 years: 4.0-5.2 mg/dL

14-15 years: 3.5-4.9 mg/dL

16-17 years: 3.1-4.7 mg/dL

> or =18 years: 2.5-4.5 mg/dL

Reference values have not been established for patients that are younger than 12 months of age.

Interpretation
Provides information to assist in interpretation of the test results

Panel results are not diagnostic but rather indicate that there may be a problem with the kidneys and that further testing is required to make a diagnosis and determine the cause. Results of the panel are usually considered together, rather than separately. Individual test results can be abnormal due to causes other than kidney disease but taken together with risks and signs and symptoms, they may give an indication of whether kidney disease is present.

Cautions
Discusses conditions that may cause diagnostic confusion, including improper specimen collection and handling, inappropriate test selection, and interfering substances

No significant cautionary statements.

Clinical Reference
Recommendations for in-depth reading of a clinical nature

1. Oh MS: Evaluation of renal function, water, electrolytes, and acid-base balance. In: McPherson RA, Pincus MR, eds.  Henry's Clinical Diagnosis and Management by Laboratory Methods. 22nd ed. Elsevier Saunders; 2011:chap 14

2. Renal Panel. Testing.com; Updated November 9, 2021. Accessed July 14, 2022. Available at www.testing.com/tests/renal-panel/

Method Description
Describes how the test is performed and provides a method-specific reference

Potassium, Sodium, Chloride:

Ion-selective electrode (ISE) (indirect potentiometry). The ion selective electron (ISE) module indirectly measures the electromotive force (EMF) difference between an ISE and a reference electrode. The EMF of the ISE is dependent on the ion concentration of the sample. The EMF of the reference electrode is constant. An electronic calculation circuit converts EMF of the sample to the ion concentration of the sample.(Package insert: ISE Indirect Na, K, CL for Gen2. Roche Diagnostics; 12/2020)

 

Bicarbonate:

This is a photometric rate reaction. Bicarbonate (HCO3-) reacts with phosphoenolpyruvate in the presence of phosphoenolpyruvate carboxylase to produce oxaloacetate and phosphate. The oxaloacetate produced is coupled with nicotinamide adenine dinucleotide (NADH) in the presence of malate dehydrogenase to produce malate and NAD+. The consumption of NADH causes a decrease in absorbance and is monitored in the UV range of 320 nm to 400 nm. The rate of change is directly proportional to the concentration of bicarbonate.(Package insert: Bicarbonate reagent. Roche Diagnostics; 04/2019)

 

Anion Gap:

This is a calculated result. The following equation is used to calculate the anion gap (A gap):

A gap = Na - (Cl + HCO3-)

 

Blood Urea Nitrogen (BUN):

This is a kinetic UV assay where urease cleaves urea to form ammonia and carbon dioxide. The ammonia formed then reacts with alpha-ketoglutarate and NADH in the presence of urease/glutamate dehydrogenase to yield glutamate and NAD+. The decrease in absorbance, due to the consumption of NADH, is measured kinetically and is proportional to the amount of urea in the sample.(Package insert: Urea/BUN reagent. Roche Diagnostics; 12/2019)

 

Creatinine:

This enzymatic method is based on the conversion of creatinine with the aid of creatininase, creatinase, and sarcosine oxidase to glycine, formaldehyde, and hydrogen peroxide. Catalyzed by peroxidase, the liberated hydrogen peroxide reacts with 4-aminophenazone and HTIB (hydroxy[tosyloxy]iodobenzene) to form a quinone imine chromogen. The color intensity of the quinone imine chromogen formed is directly proportional to the creatinine concentration in the reaction mixture.(Package insert: Creatinine. Roche Diagnostics; 02/2019)

 

Estimated Glomerular Filtration Rate:

Estimated GFR (eGFR) is calculated using the 2021 Chronic Kidney Disease Epidemiology Collaboration (CKD-EPI) equation:

Females:

If creatinine < or =0.7 mg/dL: 142 x (Scr/0.7)(-0.241) x 0.9938age x 1.012

If creatinine >0.7 mg/dL: 142 x (Scr/0.7)(-1.200) x 0.9938age x 1.012

 

Males:

If creatinine < or =0.9 mg/dL: 142 x (Scr/0.9)(-0.302) x 0.9938age

If creatinine >0.9 mg/dL: 142 x (Scr/0.9)(-1.200) x 0.9938age

Values are reported for calculated glomerular filtration rate (GFR) estimates between 15-90 mL/min/1.73 m(4). Estimated GFR values outside of this range are reported as "<15 mL/min/1.73 m(2)" or ">90 mL/min/1.73 m(4)" and not as an exact number.

 

Calcium:

Calcium ions react with NM-BAPTA (5-nitro-5'-methyl-1,2-bis(o-aminophenoxy)ethane-N,N,N',N'-tetraacetic acid)under alkaline conditions to form a complex. This complex reacts in the second step with EDTA. The change in absorbance is directly proportional to the calcium concentration and is measured photometrically.(Package insert: Calcium Gen.2 reagent. Roche Diagnostics; 07/2019)

 

Glucose:

Glucose in the serum, in the presence of hexokinase, is converted to glucose-6-phosphate (G6P). In the presence of nicotinamide adenine dinucleotide phosphate (NADP+), glucose-6-phosphate dehydrogenase oxidizes G6P to gluconate-6-phosphate and NADPH. The rate of NADPH formation is directly proportional to glucose concentration in the serum and is measured photometrically.(Package insert: Glucose HK Gen.3 Reagent. Roche Diagnostics; 11/2021)

 

Albumin:

The dye, bromcresol green (BCG), is added to serum in an acid buffer. The color intensity of the blue-green albumin-BCG complex is directly proportional to the albumin concentration and is determined photometrically.(Package insert: Albumin Gen.2 reagent. Roche Diagnostics; 02/2022)

 

Phosphorus (Inorganic):

Inorganic phosphate forms an ammonium phosphomolybdate complex with ammonium molybdate in the presence of sulfuric acid. The concentration of phosphomolybdate formed is directly proportional to the inorganic phosphate concentration and is measures photometrically.(Package insert: Phosphate (Inorganic) ver 2. Roche Diagnostics; V11.0, 07/2019)

PDF Report
Indicates whether the report includes an additional document with charts, images or other enriched information

No

Day(s) Performed
Outlines the days the test is performed. This field reflects the day that the sample must be in the testing laboratory to begin the testing process and includes any specimen preparation and processing time before the test is performed. Some tests are listed as continuously performed, which means that assays are performed multiple times during the day.

Monday through Sunday

Report Available
The interval of time (receipt of sample at Mayo Clinic Laboratories to results available) taking into account standard setup days and weekends. The first day is the time that it typically takes for a result to be available. The last day is the time it might take, accounting for any necessary repeated testing.

Same day/1 to 2 days

Performing Laboratory Location
Indicates the location of the laboratory that performs the test

Rochester

Fees
Several factors determine the fee charged to perform a test. Contact your U.S. or International Regional Manager for information about establishing a fee schedule or to learn more about resources to optimize test selection.

  • Authorized users can sign in to Test Prices for detailed fee information.
  • Clients without access to Test Prices can contact Customer Service 24 hours a day, seven days a week.
  • Prospective clients should contact their Regional Manager. For assistance, contact Customer Service.

Test Classification
Provides information regarding the medical device classification for laboratory test kits and reagents. Tests may be classified as cleared or approved by the US Food and Drug Administration (FDA) and used per manufacturer instructions, or as products that do not undergo full FDA review and approval, and are then labeled as an Analyte Specific Reagent (ASR) product.

This test has been cleared, approved, or is exempt by the US Food and Drug Administration and is used per manufacturer's instructions. Performance characteristics were verified by Mayo Clinic in a manner consistent with CLIA requirements.

CPT Code Information
Provides guidance in determining the appropriate Current Procedural Terminology (CPT) code(s) information for each test or profile. The listed CPT codes reflect Mayo Clinic Laboratories interpretation of CPT coding requirements. It is the responsibility of each laboratory to determine correct CPT codes to use for billing.

CPT codes are provided by the performing laboratory.

KS: 84132

NAS: 84295

CL: 82435

HCO3: 82374

BUN: 84520

CRTS1: 82565

CA: 82310

GLURA: 82947

ALB: 82040

PHOS: 84100

LOINC® Information
Provides guidance in determining the Logical Observation Identifiers Names and Codes (LOINC) values for the order and results codes of this test. LOINC values are provided by the performing laboratory.

Test Id Test Order Name Order LOINC Value
RFAMA Renal Function Panel, S 24362-6
Result Id Test Result Name Result LOINC Value
Applies only to results expressed in units of measure originally reported by the performing laboratory. These values do not apply to results that are converted to other units of measure.
AGAP Anion Gap 33037-3
ALB Albumin, S 1751-7
BUN Bld Urea Nitrog (BUN), S 3094-0
CL Chloride, S 2075-0
GLURA Glucose, Random, S 2345-7
HCO3 Bicarbonate, S 1963-8
PHOS Phosphorus (Inorganic), S 2777-1
CA Calcium, Total, S 17861-6
NAS Sodium, S 2951-2
KS Potassium, S 2823-3
CRTSA Creatinine, S 2160-0
EGFR1 Estimated GFR (eGFR) 2160-0

Test Setup Resources

Setup Files
Test setup information contains test file definition details to support order and result interfacing between Mayo Clinic Laboratories and your Laboratory Information System.

Excel | Pdf

Sample Reports
Normal and Abnormal sample reports are provided as references for report appearance.

Normal Reports | Abnormal Reports

SI Sample Reports
International System (SI) of Unit reports are provided for a limited number of tests. These reports are intended for international account use and are only available through MayoLINK accounts that have been defined to receive them.

SI Normal Reports | SI Abnormal Reports

Test Update Resources

Change Type Effective Date
File Definition - Result ID 2022-08-23
File Definition - Result ID 2021-06-24