Hemoglobin, Unstable

0049020
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Example Reports
Negative
Positive

Ordering Recommendation

Use to confirm unstable nature of hemoglobins. Test cannot be used on infants <6 months of age due to physiologically elevated Hb F levels.

Mnemonic

HGB UNSTAB

Methodology

Visual Identification

Performed

Mon-Fri

Reported

1-5 days

New York DOH Approval Status

This test is New York DOH approved.

Specimen Required

Patient Preparation

Test results are unreliable in infants younger than 6 months of age.

Collect

Lavender (EDTA) or pink (K2EDTA).

Specimen Preparation

DO NOT FREEZE. Transport 5 mL whole blood. (Min: 2 mL)

Storage/Transport Temperature

Refrigerated.

Unacceptable Conditions

Samples more than 7 days old. Specimens collected on infants less than 6 months old.

Remarks
Stability

Ambient: Unacceptable; Refrigerated: 7 days; Frozen: Unacceptable

Reference Interval

Negative

Interpretive Data



Compliance Category

Standard

Note

Hotline History

N/A

CPT Codes

83068

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Components

Component Test Code* Component Chart Name LOINC
0049020 Hemoglobin, Unstable 4639-1
* Component test codes cannot be used to order tests. The information provided here is not sufficient for interface builds; for a complete test mix, please click the sidebar link to access the Interface Map.

Aliases

  • Hb Heat Sensitivity
  • Heat Stability Test
  • Isopropanol Stability Test
  • RBC Heat Stability Test
  • Unstable Hemoglobin
Hemoglobin, Unstable