Test ID: BMNA
Breast Milk Nutritional Analysis
Secondary ID 
A test code used for billing and in test definitions created prior to November 2011
NY State Approved Indicates the status of NY State approval and if the test is orderable for NY State clients.
Useful For Suggests clinical disorders or settings where the test may be helpful
Assessing the nutritional quality of human milk specimens
Method Name A short description of the method used to perform the test
Thin-Layer Chromatography (TLC)/Colorimetry/Spectrophotometry (SP)/Other Methodologies as Appropriate
Reporting Name A shorter/abbreviated version of the Published Name for a test; an abbreviated test name
Aliases Lists additional common names for a test, as an aid in searching
Lactose, Miscellaneous Fluids
Lipid Survey, Breast Milk
Nutritional Analysis, Breast Milk
Specimen Type Describes the specimen type needed for testing
Specimen Required Defines the optimal specimen. This field describes the type of specimen required to perform the test and the preferred volume to complete testing. The volume allows automated processing, fastest throughput and, when indicated, repeat or reflex testing.
Container/Tube: Tightly-sealed, plastic container
Specimen Volume: 5 mL
Collection Instructions:
1. Specimen must be labeled with the mother's name (not the baby's).
2. Indicate mother's age.
Specimen Minimum Volume Defines the amount of specimen required to perform an assay once, including instrument and container dead space. Submitting the minimum specimen volume makes it impossible to repeat the test or perform confirmatory or perform reflex testing. In some situations, a minimum specimen volume may result in a QNS (quantity not sufficient) result, requiring a second specimen to be collected.
Reject Due To Identifies specimen types and conditions that may cause the specimen to be rejected
| Hemolysis | NA |
| Lipemia | NA |
| Icterus | NA |
| Other | NA |
Specimen Stability Information Provides a description of the temperatures required to transport a specimen to the laboratory. Alternate acceptable temperature(s) are also included.
| Specimen Type | Temperature | Time |
|---|---|---|
| Breast Milk | Frozen | 150 days |
Clinical Information Discusses physiology, pathophysiology, and general clinical aspects, as they relate to a laboratory test
For breast-fed infants, half of the infant's caloric needs are supplied by fat in the breast milk. If the fat supply is inadequate, nutritional deficiencies may occur and may cause failure to thrive.
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.
|
| Post-Partum Day 1 | Post-Partum Day 36 |
| Glucose | 15-40 mg/dL | 15-40 mg/dL |
| Lactose | 2,100-6,000 mg/dL | 2,700-8,000 mg/dL |
| Triglycerides | 420-3,900 mg/dL | 1,600-6,400 mg/dL |
| Proteins | 1,200-4,700 mg/dL | 880-1,920 mg/dL |
Interpretation Provides information to assist in interpretation of the test results
The nutritional content of breast milk changes considerably from day 1 to day 36 postpartum. Subsequent to that time the nutritional content is considered to be stable.
Measured nutritional components are glucose, lactose, triglyceride, and protein. Deficiency of any of the measured or calculated parameters is suggestive of decreased nutritional quality of human breast milk.
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 Provides recommendations for further in-depth reading of a clinical nature
Lawrence RA, Lawrence RM: Breastfeeding: a guide for the medical profession. 5th edition. Edited by Mosby. St. Louis. 1999
Method Description Describes how the test is performed and provides a method-specific reference
Several different methods are used in the analysis of human breast milk. The sample is analyzed for triglycerides using an enzymatic method. One aliquot of breast milk is tested for total protein using biuret reagent and titration methodology and for measurement of glucose using a glucose oxidase method. A second aliquot of breast milk is pre-incubated with beta-galactosidase and glucose is measured. Lactose is calculated using results obtained by the methods listed above.
Day(s) and Time(s) Test Performed Outlines the days and times the test is performed. This field reflects the day and time the sample must be in the testing laboratory to begin the testing process and includes any specimen preparation and processing time required before the test is performed. Some tests are listed as continuously performed, which means assays are performed several times during the day.
Monday through Friday; Continuously
Analytic Time Defines the amount of time it takes the laboratory to setup and perform the test. This is defined in number of days. The shortest interval of time expressed is "same day/1 day," which means the results may be available the same day that the sample is received in the testing laboratory. One day means results are available 1 day after the sample is received in the laboratory.
Maximum Laboratory Time Defines the maximum time from specimen receipt at Mayo Medical Laboratories until the release of the test result
Specimen Retention Time Outlines the length of time after testing that a specimen is kept in the laboratory before it is discarded
Performing Laboratory Location The location of the laboratory that performs the test
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's instructions, or as products that do not undergo full FDA review and approval, and are then labeled as an Analyte Specific Reagent (ASR), Investigation Use Only (IUO) product, or a Research Use Only (RUO) product.
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 Medical Laboratories interpretation of CPT coding requirements. It is the responsibility of each laboratory to determine correct CPT codes to use for billing.
82945-Glucose
84157-Protein, total
84478-Triglycerides
LOINC® Code Information Provides guidance in determining the Logical Observation Identifiers Names and Codes (LOINC) values for the result codes returned for this test or profile.
| Result ID | Reporting Name | LOINC Code |
|---|---|---|
| GLBMA | Glucose | 2344-0 |
| LACT | Lactose | In Process |
| TGBMA | Triglycerides | 12228-3 |
| PTBMA | Proteins | 2881-1 |
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