Days Set Up
Daily, 24 hours
Analytic Time

1 hour

MiChart Code
Body Fluid Hematocrit
Soft Order Code

Test Updated:


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Find a Requisition

All specimens should be accompanied by a requisition.

Submitting Specimens

Learn about how to properly label and where to ship specimens.

Order Kits and Supplies

MLabs provides all the supplies necessary for the collection of specimens.

Test FAQ

Visit our provider FAQ and learn about common questions to ordering tests.

Test Overview

Test Methodology

Specimen spun in capillary tube, analyzed on micro-capillary reader

Test Usage

Evaluation of packed blood cells to fluid volume

Reference Range

No reference values as fluid accumulations are not normal.

* Reference ranges may change over time. Please refer to the original patient report when evaluating results.

Specimen Requirements

Collection Offsite

Collect specimen using aseptic technique. For optimal results, specimen should reach laboratory within 1 hr. of collection.If specimen must be stored, refrigeration is recommended. Specimen must be received within 24 hours of collection.

Red Top Tube
Red Top Tube
Normal Volume
1 mL or more
Minimum Volume
1 mL

Billing Information

CPT Code
Pro Fee Code

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Our High Standard

Quality that sets us apart

As the reference laboratory division of Michigan Medicine's Department of Pathology, MLabs shares the institution's commitment to applying established quality principles to clinical laboratory testing. Like other large organizations in complex, consequential fields, we rely on an established approach to monitor quality throughout the testing process.