Test Name: HORIZON 4 (SMA, CF, FRAGILE X, DMD)
Test Code: LAB1000012
Alias: LAB1000012
CPT Code(s): N/A  
Test Includes:

Genes Analyzed: CFTR, DMD, FMR1, SMN1
Preferred Specimen:

10 mL whole blood
Container:

10 mL Lavender EDTA tube from Natera Panorama/Horizon Prenatal Test Kit
Alternate Container:

Two 6mL Lavender EDTA tubes
Collection Instructions:

Allow Lavender EDTA tubes to fill completely. Gently invert tube 8-10 times immediately after collection to prevent clotting.

Only 1 full 10 mL Lavender tube is needed. However, if Tay-Sachs Enzyme is selected, a second 10 mL Lavender-top K2 EDTA tube should be submitted (for a total of two tubes).
Transport Temperature:

Room temperature.
Stability:

Room temperature: ~72 hours

Refrigerated: 7 days

Frozen: unacceptable
Limitations: Please note: This test is available exclusively to Northwestern Medicine providers and cannot be requested by HealthLab clients.
Additional Information:

Natera will bill the patient’s insurance directly. Insurance coverage for Horizon testing is contingent on insurance plan and coverage benefits. Please call Natera at 877-869-3052 in order to verify and check insurance coverage options.
Schedule:

Report Available 14 days from receipt of sample at Natera
Performing Lab:

Natera Lab; Test code H4
Clinical Significance:

Horizon genetic carrier screening helps patients determine the risk of passing on serious genetic conditions to their child. It can be performed either before or during pregnancy.

Use:

Updated: 1/6/26

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The CPT codes included in this publication are in accordance with Current Procedural Terminology, a publication of the American Medical Association. CPT codes are provided here for the convenience of our clients; however, correct coding often varies from one carrier to another, and HealthLab may bill specific carriers using codes other than those shown. Clients who bill for services should verify the code(s) with the applicable payor to confirm that their use is appropriate in each case.
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