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Epic Code LAB177 Albumin, Body Fluid Level

Test Name Alias

Albumin Fluid | 8 | Albumin BFL | ALB

Interface Order Alias


Ordering Instructions

Ascites, Pericardial, Peritoneal, Pleural Cavity (Left or Right) will be performed at Corewell Health Reference Laboratory West.


If your source does not match the above, please order a Reference Miscellaneous Test (LAB848) and list the desired test, specimen source and type.

Collection Instructions

Specimen Collection: Body Fluid


Container(s): 4.5 mL Mint Green Top (Lithium Heparin Gel) or 6 mL Red Top Vacutainer  

Preferred Volume to Collect: Full tube 

Minimum Volume to Collect: 0.5 mL


Collection Instructions:

  • Indicate source.
    • Ascites, Pericardial Peritoneal, Pleural Cavity, Left or Pleural Cavity, Right will be performed at Corewell Health Reference Laboratory.West.
    • If your source does not match the above, please order a Reference Miscellaneous Test and list the desired test and specimen source and type.


Processing Instructions (Laboratory, Outpatient or Off-site collection)

Transport Temperature: Refrigerate

Specimen Stability

Ambient: 8 hours

Refrigerate: 72 hours

Frozen: aliquot for longer storage

Laboratory Retention: 7 days

Test Frequency

Available 24 hours, usual TAT 1 day.

Reference Range

Reference range is not available.


Albumin Peritoneal Fluid:  Because of the wide range of albumin levels seen in serous body fluids, results are best evaluated by using the serum-ascites albumin gradient. A serum-ascites albumin gradient of equal to or greater than 1.1 g/dL predicts portal hypertension with 97-98% accuracy and is seen in conditions such as cirrhosis, congestive heart failure and portal vein thrombosis. Gradients less than 1.1 g/dL are associated with ascites due to exudates (e.g. inflammation, infection and malignancy).

Pleural Fluid: Serum albumin-pleural fluid albumin gradient of less than or equal to 1.2 g/dL is consistent with exudate.            


Comment applied to All Fluids: This test was developed and its performance characteristics determined by Corewell Health Laboratories.  It has not been cleared or approved by the FDA. This test is used for clinical purposes. It should not be regarded as investigational or for research. The reference range and other method performance specifications have not been established for this body fluid.  The test result must be integrated into the clinical context for interpretation.           

Performing Department


Performing Department Laboratory Location

Corewell Health Reference Laboratory, Grand Rapids, MI


Colorimetric – bromcresol purple or bromcresol green

Requests for specific methodology at each site: please Contact Us.



CDM Code


Epic Test ID



Albumin BFL: 1747-5

Specimen Type: 66746-9

Mayo Access Code


Reviewed Date


Updated Date

3/14/2024 - Reference Range and Ordering instructions