Sign in →

Test Code 9619 Beta-Hydroxybutyrate, Serum

Additional Codes

Mayo Test ID

Reporting Name

Beta-Hydroxybutyrate, S

Useful For

Monitoring therapy for diabetic ketoacidosis


Investigating the differential diagnosis of any patient presenting to the emergency room with hypoglycemia, acidosis, suspected alcohol ingestion, or an unexplained increase in the anion gap


In pediatric patients, the presence or absence of ketonemia/uria is an essential component in the differential diagnosis of inborn errors of metabolism


Serum beta-hydroxybutyrate is a key parameter monitored during controlled 24-hour fasts

Performing Laboratory

Mayo Medical Laboratories in Rochester

Specimen Type


Specimen Required

Collection Container/Tube:

Preferred: Serum gel

Acceptable: Red top

Submission Container/Tube: Plastic vial

Specimen Volume: 1 mL

Collection Instructions:

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

2. Red-top tubes should be centrifuged and aliquoted within 2 hours of collection.

Specimen Minimum Volume

0.25 mL

Specimen Stability Information

Specimen Type Temperature Time
Serum Frozen (preferred) 7 days
  Refrigerated  7 days

Reference Values

<0.4 mmol/L

Day(s) and Time(s) Performed

Monday through Sunday; Continuously

Test Classification

This test has been cleared or approved by the U.S. 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


LOINC Code Information

Test ID Test Order Name Order LOINC Value
BHYD Beta-Hydroxybutyrate, S 6873-4


Result ID Test Result Name Result LOINC Value
BHYD Beta-Hydroxybutyrate, S 6873-4

Method Name

Photometric, B-Hydroxybutyrate Dehydrogenase (B-HBDH)

Barnes-Jewish Hospital Additional Information:

For BJH Laboratory Use Only
Laboratory Processing Instructions:

BJH Chemistry will forward to the performing laboratory. Do not reject specimen if not received on ice. Laboratory Medicine approval at 314-747-1320 is required prior to sending testing to the performing laboratory.